Two and a Half Men: This applies to everyone, but especially Evelyn, the two brothers' mother. She frequently reacts to news that affects anyone except her with "Do you have any idea what you put me through?!"
Damon Salvatore. Damon openly admits he's selfish in season four. Damon tells Elena that he would save Elena over any of her loved ones any day of the week, even if that means that Elena's loved ones die "Because I am that selfish".
Klaus. He is extremely selfish and only cares about his power, his goal and his agenda.
The Cat actually makes a logical argument that the world revolves around him. It finishes with The most exciting things that have ever happened to me, have been whenever I was in the room! This is apparently the default attitude of his species.
Rimmer is just as bad. "Lister, I just saw your future self die! Wait, what are you so horrified about? I'm the one who had to watch it."
Charmed: Phoebe, particularly in Season 5. About the time her actress got more and more creative control in the show.
In the episode "Boom Town", Margaret Blaine Slitheen tells the Doctor that, on one occasion, she could have murdered someone to benefit herself, but didn't. The Doctor points out that there are a lot more people that she has murdered - including the woman whose skin she's currently wearing.
The Doctor's Evil Counterpart, the Master. While the Doctor has used up several regenerations saving his companions, the Master is a total narcissist with a history of throwing others under the bus to save himself. In "The End of Time", he assumes the ominous prophecy the Doctor's heard is all about him, unaware he's actually Rassilon's errand boy.
In the old series's "The Evil of the Daleks,' Theodore Maxtible has become an ally of the Daleks and helped them make a girl their hostage. When the girl's father wants to know about her well-being, Maxtible tells him, "I am not a nursemaid to your daughter!" The only thing he cares about is the Daleks' promise to give him the secret of turning "base metal into gold!"
Law & Order: Criminal Intent: One episode had this as the Villain Of The Week's weakness. He betrays everyone who helps him but expects complete loyalty from his "allies". To this end they simply make him think his latest accomplice is planning to betray him, causing said accomplice to realise how dangerous he is and turn to the police for help.
In the finale, Sylar personifies this trope. He says that Angela is a monster because she was willing to kill her husband, blow up New York, and worst of all, hurt him by making him think he had a family.
Possibly a Justified Trope in that by making him think he had a family, she was really just using his mommy issues to trigger his season-one persona of rampaging powers-Darwinist lunatic. Since the bomb didn't go off and her other crime involved just one (attempted) murder (which even that was technically to protect Nathan Petrelli, since the dad did try to off Nathan Petrelli, and was also responsible for crippling Nathan's ex-wife Heidi), this could technically be the worst of her crimes as it culminated in a lot of deaths. Still, I don't think the writers deserve the credit that statement implies: logic in a season three script.
Nathan Petrelli too. This was at its peak in season one but never quite disappeared. He treats his mother (Who just lost her husband of four decades) as an inconvenience, talks down to his brother and openly insults his career choice before offering him a job that he even admits is solely for his benefit, and is willing to let Lindeman destroy New York so he can become President in the future. In season three, he puts all his friends and his family in danger and nearly ruins Their lives to sort out his own guilt for working with his dad (Who wasn't exactly selfless either), which he screws up royally. After a while, You've got to wonder why Peter ever looked up to such a selfish jerk.
Sea Change: Although not a villain - this show doesn't really have any villains - Jules Jelly, the daughter of town Jerk Ass Bob Jelly, is probably the paramount example. The worst example is in the episode "Balls and Friggin' Good Luck", where a young man she dated for a while, Jerome, committed suicide. Jules constantly exaggerates and grand-stands to make everything about her while showing absolutely no sorrow at Jerome's death. Even worse is when at the inquest, she tries to act like everything's about her, while Jerome's family are there, crying their eyes out. It gets so bad that her own mother tells her to stop it.
Monk: It's been said that Adrian Monk has to make an issue personal in order to exert more self-control over his world.
In one episode Sharona, his first caretaker, confesses to Monk that she is afraid of elephants. Monk, who himself is full of phobias, dismissively tells her to "suck it up." She spends a good part of the rest of the episode furious at his callousness, and he can't figure out why she's mad at him, even when she throws his own words back in his face, until she spells it out for him.
Ally McBeal: The title character. Actually treated sympathetically by the show; when asked why her problems are so much more important than everyone else's, she responds "because they're mine" while angsty music plays in the background.
Kamen Rider Den-O: Sieg, the Sheltered AristocratImagin, starts off extremely arrogant, referring to everyone around him as servants; in fact, his two catchphrases are "Advent; the one who stands above all" and "The world revolves for my sake". Once he gets owned by Hana (verbally and physically), he mellows out and starts acting more benevolent, but still does it in arrogant fashion.
Kamen Rider Kabuto: Tendou Souji makes a play at this, particularly with two lines of his grandmother's wisdom. One is his Catch Phrase: "Walking the Way of Heaven, I am the man who rules over all." The other may be giving the trope a Lampshade Hanging: "The world revolves around you. ... It's fun to think like that."
Cordelia, in the first season episode "Out of Mind, Out of Sight", after noticing that all of the victims have a connection to her:
Cordelia: This is all about me! Me, me,me!
Xander: Wow! For once she's right!
This is Cordelia's whole schtick until she starts getting Character Development in the second season, whether she's complaining about the trauma of hitting a cyclist with her car (and the cyclist wanting it to be all about their leg), shushing her companion as a motormouth for almost getting a word in edgewise, or (as above) realizing that the Monster of the Week is targeting her. (All this is even funnier when considering what happens to her on the spinoff.)
Nobody else matters to Warren but himself. Not Andrew, not Jonathan, not anybody.
Spellbinder: Spellbinder Ashka sabotages Regent Correon's suit to get him exiled after he loses the Wizard Duel. Then she destroys a book of technological secrets that would've drawn her world out of prolonged stagnation and barbarism so as not to jeopardise her position in power. Then she tricks Paul's father to build her a new powersuit and as a token of gratitude she locks his entire family in an electrified cage and leaves them there to die. In the sequel she steals a valuable mask that is also an interface of a super-computer that governs a whole country, thus leaving it defenceless against an invading horde of barbarians.
Coupling: Jane. When we see her under "Captain Subtext" mode, all of her dialogue is translated as "Let's all talk about me! Me... Me... Me!"
Trina: So she said "You think you're better than everyone else" and I said "Well, yeah, pretty much."
While not to the same extent as her sister (because let's face it, who is?), Tori can be pretty selfish as well.
Big Time Rush: James Diamond is essentially a male version of Trina. Gustavo can also be like this as well, considering how greatly he thinks about his music and never thinks he needs relaxing.
Ugly Betty: Betty briefly dates a musician who has this attitude. When he begins to show off his new song for her on a date, she has a trippy hallucination of him singing a song consisting of nothing but "Me me me me me!" Hilariously, the actually chorus of the song turns out to be "The only one I can depend on...is me."
Supernatural: Lucifer suffers from this, with several characters pointing out that his motivation is the cosmic equivalent of a child throwing a tantrum for not getting his way.
30 Rock: Tracy and Jenna. Liz has her moments of this too. And Jack. And... okay, everyone not named "Kenneth".
Noah's Arc: Noah seems to fall into this regarding relationships, and occassionally catches himself (or is called out on) not really giving as much focus to his friends' relationship issues while they are expected to drop whatever they are doing to tend to his. Its highlighted at the end of one episode where Ricky just went through a breakup and is clearly depressed, and Noah calls him to complain about the "emergency" of Wade wanting to go house hunting with him.
House: House has been accused of this, for many, many reasons.
Choujin Sentai Jetman: Radiguet. He wants to take everything for himself, even from fellow elites. Or boss (be it Juza or Tranza, if it means an Enemy Mine with the Jetman, he'll do it to reclaim his superiority).
Kaizoku Sentai Gokaiger: Basco Ta Jolokia. He will betray everyone and do anything to get what he wants. Yes, that include threatening to kill a wounded child which he was very willing to do. In fact, his catchphrase is: To gain something, you must throw something else. Said 'something else' can be anything that didn't belong to him in the first place.
Shows up all the time, especially with jury members in the final episode: many reflect on their time in the game and conclude that they were Too Cool to Live, and their questions for the Final Two/Three revolve around getting the finalists to suck up to them.
Naonka from the Nicaragua season is one of the more extreme examples. Immediately after winning a challenge, she announces her intention to quit the game. After a few minutes on this subject, the host gets back to business and gives the winning team a choice: one member can give up reward (which includes food) to get food and shelter for the tribe. Naonka, even though she'll be fed that night at the Loser Lodge if once she quits, makes no move to give up the reward and talks to the Confession Cam about how she doesn't care, she wants food now. She spends the rest of the episode talking about how awesome she is (even though she's quitting because the experience is too hard) and how she knows she would've won if she stayed (not a chance; she was being carried to the end because she'd be easy to win against).
Russell from Samoa and Heroes Vs Villains seemed to believe that he was such a good player and his strategy- which involved voting off members of his own alliance, constantly backstabbing people and lying to everyone- was so good that the jury would just automatically vote for him, even though he got most of them voted off in the first place. In the end, out of the eighteen votes he could have got from both juries, he got two. And both of those were from the Samoa jury. Jeff tried to tell him that maybe if he hadn't lied to the jury, back-stabbed them and generally treated them like shit, he might have got some votes… and he still couldn't understand, refusing to acknowledge the idea of the social game. At one point he even said that America should be able to vote, he was that frustrated.
This is the usual attitude of the study group (e.g. thinking that a professor ignited a protest against them so that they could learn about different perspectives of history). It doesn't earn them any favors with the rest of the student body, who are tired of the group hogging the spotlight all the time. This operates as part of the series' tendency to Lean On The Fourth Wall about such matters; while in the real world they would (and to their fellow students they do) appear to be self-obsessed Attention Whores, ultimately they're the main characters of the series and to varying degrees are Genre Savvy about this — so the world they inhabit really is All About Them.
Of the study group, Jeff in particular has a problem with this; he actually is a self-obsessed narcissist convinced the entire universe exists for his benefit, and can get very touchy if someone or something suggests this isn't the case. Lampshaded and demonstrated in one episode:
Abed: Unfortunately, the very thing that drove you to this dorm room is what will prevent you from properly running this machine, or even being a cog in it: your ego. Jeff: I see. I see. This has been about me the whole time. You want a shot at the Jeff Winger throne? You better bring a powerful ass. Oh, and for your information, I don't have an ego; my Facebook photo is a landscape.
Rachel Berry: accuses Mr Schue of giving other students solos purely to punish her; sends a rival to a crackhouse instead of an audition to avoid losing her top spot in the club.
Finn: lies to Rachel to get her back into glee so he can get a music scholarship.
Sue Sylvester ...everything she says and does, really.
Mr. Schue gets accused of this when he focuses too much on his own personal musical preferences and not what is best for the students. He did start the Glee club partly to relive his glory days and will occasionally slip into behaving like it is all about him. Having to deal with Sue and Rachel usually knocks him out of it.
Mitchell gets regularly called out on this. He focuses on how miserable and guilty he feels and forgets all the people he killed and the suffering of their families. It might actually be a survival trait for vampires as those who are too emphatic would be prone to suicide or exposing the Masquerade.
It is a vampire trait, if they stop drinking blood their empathy comes back. Remembering all the evil you've done is one of the hardest things about staying clean.
Rachel suffers badly from this because of her doting parents. It was well-managed in earlier seasons when she was aware of how spoiled she was, trying to improve, and balanced with a scared naiviete. However in later seasons, she becomes more confident and arrogant showing little regard for anyone else's problems.
Special examples are trying to crash Ross's wedding even though she'd rejected him barely a season before, stealing Monica and Chandler's engagement night because they were happy and she wasn't, and later forcing them to come to her baby's birthday party even though they'd recently discovered they couldn't have children and wanted to take a weekend away to deal with it.
The Big C: Rebecca has a rather selfish reaction to Cathy revealing that she has cancer:
Rebecca: You will be my first real friend with cancer. I will be forever changed.
Cathy:(dryly) Hopefully for the better.
Smallville: Lex Luthor goes this way as the show progresses, allowing his obsessions to dominate his life, and refusing to accept the blame for any of the disasters he's caused. He blames his father, Clark, Lana, and anyone else he can, has dozens of skeletons in his closet, but takes anyone else keeping a secret as a personal betrayal, and tries to control the lives of everyone around him, never understanding why they might have a problem with that.
Walt in general had this problem in season three and four, because his cancer's gone into remission and mobsters are threatening to kill him. It's an unusual contrast to earlier seasons Walt when he was all about doing crazy shit to provide for his family before he died.
It gets even worse in season five. By the sixth episode of the season he flat out admits that he's continuing to cook meth in order to build an empire. He even tells Jesse that "this business is all I have left", despite the fact that the reason he's lost most of what he had at that point was due to his desire to continue cooking.
In the finale, Walt admits to Skyler that cooking meth was something he did for himself, and his family was always just an excuse.
Star Trek: The Next Generation: Obsessive collector Kivas Fajo in the episode "The Most Toys". In order to expand his collection, he abducts and fakes the death of a Federation officer (specifically, Data), then tries to force Data to comply with his whims by threatening to murder his own subordinates, at one point killing his assistant of 14 years, then dismissing her death with "there's always another Varria". Had O'Brien been 5 seconds slower with the transporter, Data would have inflicted an agonising Ironic Death on him with the same model of disruptor he'd used on Varria. Nobody in or out of universe would have put much effort into mourning him.
Tinsel: Kwame. He is shocked that Angela would break into his office and steal back her medical files - the same medical files that he's been blackmailing her with and that he stole from her doctor's office in the first place!
Gossip Girl: Blair Waldorf was always this from the word go, but in season five she turned it Up to Eleven - which is one of the reasons why she went from fan favorite to a character most people dislike.
The Carol Burnett Show and its spinoff, Mama's Family: Eunice Higgins always had to be the center of attention, partly due to being The Unfavorite in Mama's eyes. She even tried to upstage her own brother at his wedding. Ultimately, she moved to Florida the day before her son, Bubba, was supposed to be released from juvenile hall without telling him, and forcing him to live with Mama.
The Young Ones: This is Rick’s default state. To best illustrate, his reaction to finding out in the series finale that both his parents suddenly and mysteriously died? "The selfish BASTARDS! I was going to spend the whole summer with them!"
Leverage: The mark in "The First Contact Job" is a failed inventor who puts his name on everything his company produces, even toilets, in an effort to get his name everywhere he possibly can. Naturally, the Leverage team uses this against him in their con.
The Closer: This, along with being a Knight Templar, is one of Brenda Leigh Johnson's defining character traits: her investigation is more important than honesty (not only with potential suspects, but also her fellow cops), more important than other investigations, and more important than the law itself. And if you are not with her, then, by God, you are against her.
Good Luck Charlie: Amy Duncan. No wonder Teddy freaks out when it's claimed in one episode that she's acting like her mother.
Dawson. He's so fixated on 'reflecting' life in his movies he fails to notice the real people. Hardly an episode goes by without him bringing someone else's problems back to him. Especially disgusting as while his parents adore him, Joey's mother is dead and her father is in prison, Jack and Andie's dad walked out on them, Jen's parents abandoned her and Pacey suffers horrible abuse from his whole family. Three guesses whose issues get the most attention.
The last example concerning Pacey is especially bad. Despite being 'best friends' their whole lives, Dawson completley misses the emotional degregation Pacey's father puts him through and dismisses it as 'kidding around'. In contrast Jack takes one day to figure out the situation and sympathise with Pacey. Seriously, where was Dawson's head for the last sixteen years?
Will and Grace: Everyone has their moments, but especially Jack and Karen:
Will: Grace, this is not about you.
Grace: Yes it is, it is always about me.
Arrow: Thea Queen once told her brother that what she went through the five years he was on a deserted island was every bit as bad as what he went through. She had to deal with the deaths of her brother and father and was neglected by her mother, but she was still a rich, pretty, popular girl who spent her days in a mansion being waited on hand and foot. Oliver, meanwhile, had to watch his father kill himself to save him, bury his decaying corpse, and then spent five years on the run from people trying to kill him.
Merlin: Morgana Pendragon. While she does have terrible things happen to her, and the world actually is out to get her, she also manages to make the death of her best friends father all about her. At one point she joins the druids, and when she is informed that her decision has put the lives of many innocent people on the line she still refuses to return home because she was unhappy there. Both examples are from when she was still considered on of the good guys.
Frasier, frequently. A shining example is his reaction to Lilith and Niles sleeping together, which is to accuse them of doing it just to aggravate him.
This was the main joke of "The Lovely" Aimi MacDonald on At Last The 1948 Show, who instead of doing transitions between the sketches (her supposed role on the show) would talk about how lovely she was, try to raise money for the "Make Aimi MacDonald A Rich Woman Fund," and just generally try to draw all attention to herself.
This trope is a staple of any good portrayal of Sherlock Holmes, but recentincarnations of the character seem bound-and-determined to raise it to new levels entirely. In the series three premier of Sherlock, Holmes returns to England after a two year absence, during which the public—including Dr. John Watson—believed Holmes to be dead:
Mycroft: He [Watson's] got on with his life.
Holmes:: What life? I've been away.
On ER, Kerry Weaver's girlfriend is being investigated for sexually harassing/assaulting a patient. The woman comes to her, clearly looking for some compassion and support and Kerry's only reaction is to ask if she's told anyone about their relationship, which she wants to keep secret, fearing that their homophobic supervisor will find some contrived reason to fire her. Kerry promptly spends the rest of the episode doing everything she can think of to make sure that the relationship remains a secret, to the point where she refuses to say a single word in the woman's defense, lest it make anyone suspect that they're involved. When the hurt, angry, and fed-up woman dumps her, Kerry still doesn't get it, accusing her of not considering Kerry's feelings in the whole mess.
Dragnet: Most of the criminals feel this way, but Mister Daniel Lumis takes the cake, feeling that even the cops should accept his my-wants-trump-all attitude and apologize for daring to interrupt his three-game bowling series with handcuffs.