Forgetting Sarah Marshall is a 2008 Romantic Comedy (directed by Nicholas Stoller, co-produced by Judd Apatow) written by and starring Jason Segel as Peter Bretter, a musician who has been dumped by the titular Ms. Marshall (Kristen Bell), his TV star girlfriend. After a string of one-night stands, Peter decided to go on vacation to Hawaii to forget, erm, well, you know. Unfortunately for Peter (but fortunately for us the viewers), Sarah is staying at the same resort with her new flame, British Rock Star Aldous Snow (Russell Brand). Peter makes new friends, and starts to date Rachel (Mila Kunis), a receptionist at the resort. Schadenfreude happens. Hilarity Ensues.Later spawned a Spin-Off, Get Him to the Greek, featuring Brand reprising his Aldous Snow character from this movie alongside Jonah Hill, who, rather confusingly, does not reprise his role in this movie.
Provides examples of:
Affectionate Parody: Crime Scene: Scene of the Crime is clearly a parody of CSI: Crime Scene Investigation, using the same naming convention. Later on, a characters asks Jason Segal's character if he works on Crime Scene: Scene of the Crime (sounding enthusiastic) or Crime Scene: Phoenix (sounding mildly depressed), clearly a parody of the multiple spinoffs in the CSI franchise and the general consensus by viewers and critics that the original is the superior crime drama program, whereas the spinoffs (named after the cities they are set in) are considered kitschy and tacky.
Matthew: "OH! I saw that guy! He was my waiter and I totally dismissed him like everybody else does... in his life. And I totally, she was wrong cuz he's a major, major, major influence on me now... and I feel terrible!"
Aldous: That stupid English voice, was that me?
Matthew: Unfortunately, yes.
Also Paul Rudd's Chuck/Kunu:
Chuck: You sound like you're from London!!
British Rockstar: Aldous is an excellent example, but his complexity also makes it a subversion.
Butt Monkey: Peter spends the first half of the movie as this. Many gags center on how miserable he is after getting dumped and seeing his ex-girlfriend so happy with a new man.
Calling Your Orgasms: One of Peter's one-night stands. Later played with, as Peter calls Rachel's, screaming, "She's having an orgasm!", to Sarah as part of an odd sex competition.
Jerkass Has a Point: When it's learned that Sarah cheated on Peter for an entire year before dumping him, it makes the audience feel like she's the biggest bitch in the world. But when Peter confronts her about it and she starts listing the reasons why she cheated, you kinda have to admit that she makes some good points.
Laser-Guided Karma: Sarah, who cheated on Peter, eventually finds out that Aldous has been cheating on her.
Aldous: I would rather have my testicles spread out like a wafer and then have them covered in a layer of honey and then have wasps come and sting me and then have them covered in another layer of vinegar and then have it worn as a swimming cap by a Nazi. I'd rather have that than spend another second with her.
My God, What Have I Done?: Sarah goes through one of these after her break-up with Aldous. She realizes that Peter is actually a pretty great guy and she made a huge mistake by cheating on him and then dumping him.
Nice Guy: Aldous, despite being a sex maniac who was sleeping with Sarah behind Peter's back (and with various other women behind Sarah's back...), is actually really friendly and cordial towards Peter, which only serves to piss him off more. Peter even admits that it's very hard to hate him.
No Antagonist: Pretty much everyone in the cast is guilty of some sort of major breach of trust against one another, but all show a good deal of humanity and redeeming qualities as well. The proceedings come off more as a tragedy than the "Sarah did bad thing, root for Peter" the beginning would have you expect.
One Head Taller: Peter (6'4"), Sarah Marshall (5'1"), Rachel (5'3"). Lampshaded in the beginning by a photographer who calls Peter "Jolly Green Giant" when telling him to get out of the shot.
Pet the Dog: Aldous is by no means a bad guy, but he does do something helpful in the movie when he assists the young newlywed with his apprehensions about sex, resolving a running gag that had been making Peter rather uncomfortable in the process.
Right Through His Pants: Inverted, where there is more male nudity than female, and the full-frontal male nudity starts in the first 10 minutes of the movie.
Right Through the Wall: The two couples end up with rooms next to each other. Peter and Rachel are intentionally loud to annoy Sarah. Sarah retaliates by faking, much to Aldous's annoyance.
Romantic False Lead: Subverted. Aldous Snow is initially presented as the Romantic False Lead (and Peter thinks he is), but as Peter doesn't get back together with Sarah in the end (and stops trying about halfway through the movie), he's not.
Sex for Solace: Peter has a string of emotionless one night stands after he is dumped by Sarah, his pediatrician explains that he needs to get past Sarah and this is the perfect way to do so.
Shoot the Money: Averted. Shot on location in Hawaii and showed almost none of it. According to Russel Brand's later live comedy special, they shot a lot of outdoor sports scenes on beautiful beaches with him that were cut because he absolutely fails at surfing and horseback riding.
Supernatural Phone: Peter and Aldous mock titular faux film star Marshall's having appeared in a film about a murderous cell phone, wondering why the phone could not be defeated by simply removing the battery.