Stilgar in the Children of Dune miniseries, in response to being told that Alia has placed a bounty on his head: Well I say unto you! Send. Men. To summon. WOOOOOoooooorrrrrmmmmssssss. And we shall go to Arrakeen. To collect it. Also, in response to Muad'dib relaying an alliance offer from the spacing guild: "We haven't forgotten about the Guild...how they BLACKMAILED us for SPICE!". In fact, Stilgar's actor in the Children series (different from his actor in the first miniseries) delivers enough of these lines to qualify as a Large Ham.
CSI: Miami: "You forget one thing: We. Never. Close."
Horatio talks like this to show that things are really serious now.
Davros, the Daleks' creator, taught them how to talk this way, so naturally he does it himself. Big Finish Doctor Who has one of the more epic examples: "I! Will! Not! Cower! I! Will! Not! Die! I! Will! Not! Die! This! Is! Not! The end! This! Is! Only!THE BEGINNING!"
"YOU! WILL! TELL! ME!"
"I! WILL! SHOW! YOU! THE FOLLY OF YOUR WORDS! DOK-TOR!"
"By the ancient rites of combat, I forbid you to scavenge here for the rest of time. And when you go back to the stars and tell others of this planet, when you tell them of its riches, its people, its potential, when you talk of the Earth, then make sure that you tell them this... IT! IS! DEFENDED!"
Mr. Connolly: I! AM! TALKING! The Doctor: And I'M! NOT!LISTENING!
A villainous example by the Master, done in a menacing hiss and far more effective as a result, from "Utopia":
"I. Am. The Master."
And this one, which was just a bit louder: "HERE! COME! THE DRUMS!!!" Right before pumping out Voodoo Child by the Rogue Traders, which has the repeated refrain, "Here come the drums, here come the drums!"
Donna pulled this off when she first saw the Doctor again in "Partners in Crime", although we only see her mouthing the words (through soundproof glass): "Oh! My! GOD!" followed by, "This! Is! BRILLIANT!"
Family Matters: "Carl! Carl … Otis … Winslow!" Said by Harriet, reprimanding her husband (for accidentally discarding her late aunt's cremains in with fireplace ashes and keeping quiet) … shortly after Carl had lectured Eddie about gambling at an underground casino to cover up the fact that, while being an unlicensed driver, he was involved in a car accident with the family car.
Ross: It. Was. My. Sandwich. Colleague: Now, now. Calm down — come look in my office. Some of it may still be in the trash. W-well, it was quite large; I had to throw most of it away! Ross: You-you-you-you. Threw. My. Sandwich. Away? My sandwich?! MY!! SANDWICH!!!!
Game of Thrones. King Joffrey's response to his uncle threatening to geld him.
"What did you say? What...did you...SAY?!"
And later when he is dismissed for insulting his Dragon-in-Chief grandfather.
And later still, when he's trying his hardest to publically humiliate his uncle. This really seems to be his main tactic for intimidation.
"Kneel. I said...KNEEL!"
In an episode of Happy Endings, Jane sees Penny's new helmet that she has to wear because of her most recent (of many) head injuries, and goes so far as to say the punctuation in her sentence. "What question mark is question mark that question mark?"
Hell's Kitchen: Look! At! This! Look! LOOK!LOOK! What the *bleep* is this!?
This trope is pretty much Barney's default manner of speaking.
The best example has to come from Ted, though. "You fight all. The. Time."
Freddie's countdown in iCarly: "In Five. Four. Three. Two..."
And in some episodes when Carly and Sam describe the sketch they're about to do. ex: "MESSING! WITH! LEWBERT!"
Jack Horkheimer: Star Gazer: The titular Jack Horkheimer would like to remind everyone to "keep...looking...up!"note He didn't say it this way exclusively however. This mainly occurred in the early 1990s.
Johnny Gilbert's announcement of "THIS! IS! JEOPARDY"
Also, "And now, here is the host of Jeopardy... ALEX! TREBEK!"
This came full circle on the February 22, 2012 episode, where each clue had Johnny Gilbert reading a famous phrase beginning with "This is…" in the style of the intro. Naturally, one of them was indeed "This! IS! SPARTA!"
Kamen Rider OOO: Taka! Tora! Batta! Ta! To! Ba! Tatoba! Ta! To! Ba! (And similar for the other combos - though the combo names don't get this apart from Tatoba, the individual medals are ALWAYS announced this way.)
One of the Kitchen Nightmares openings has Gordon exclaiming "That! Is! Amazing!", possibly one of the rare occasions he's used this trope in a positive manner. His more-or-less Once an EpisodeCatch Phrase of "Shut the place down!" is usually said without emphasis, but on some occasions where things have been REALLY bad, it was emphasised "Shut! The place! DOWN!"
Burgess: Well, DCI Luther. First you umm...you assault me... YOU PUBLICLY-ASSAULT-ME!
Tsch, where is your history? Who can forget Higgins' perfect enunciation of "Oh. My. GOD!" in Magnum, P.I.?
From the first season, also courtesy of Higgie-baby: "ZEUS! APOLLO! KILL!"
Malcolm in the Middle: Malcom's friend... Stevie... always talks... like this. (It's because he has severe asthma and only really has enough breath for one or two words at a time). This actually worked to his advantage at one point, when he unleashed sweet revenge on Reese while yelling (well, as much as he can yell) "Reap... the whirlwind!"
In the "Harper vs. Harper" episode of Mama's Family, Thelma and Naomi are arguing over a broken vacuum and a burnt rug. The judge gets increasingly agitated by their antics and delivers several lines WITH! LOTS! OF! WORD! EMPHASIS!:
When Thelma tries to call Vinton as a witness:
Naomi: He's my witness!
Thelma: He's my son!
Naomi: He's my husband!
Judge: IT! IS MY! COURTROOM!
After a subject diversion about Thelma's Aunt Minnie:
Judge: I don't care about your Aunt Minnie!
Thelma: Well, neither did Uncle Dooly. I think that's what pushed the woman right over the edge...
Judge: I only care... about getting this case settled... getting you OUT! of my COURTROOM! and OUT! of my LIFE! Now you tell me! WHAT! HAPPENED! WITH! THE! CLEANER?!?!
After Thelma tries to demand the money from Naomi:
Judge: Now, I will not tell you again! LET! ME! HANDLE! THIS! CASE!
There are other examples from the same episode. One wonders how that judge fared sanity-wise after the Harper case...
Adam Savage of MythBusters parodies it when naming the dump-ammo-into-fire robot: "THIS! IS! SPARKY!!"
The Newsroom. Lampshaded in the opening scene of the first episode: "... you are without a doubt a member of the worst—period—generation—period—ever—period—so when you ask..."
Later played straight: Will asked Mac not to tell anyone the story of why they broke up. Then she accidentally sent an e-mail, explaining in some detail what happened, to the entire office...
Will McAvoy: You know how sometimes something happens in an instant that's so astonishing you just... shut down?
MacKenzie McHale: Of course, that's understa–
Will McAvoy: THAT DOESN'T! FUCKING! HAPPEN! TO ME!
The Oprah Winfrey Show: YOU! ARE! GOING! TO! AUUUUUSTRAAAAAAAALIA! Subject to much Memetic Mutation among Australians, since this particular clip was replayed pretty much everywhere by almost every channel for a while in the leadup to Oprah's actual visit.
Even Sesame Street, when Telly Monster is struggling to use a bubble wand for the first time: "I will blow a bubble! I have to! For this! Is! Bubble-Fest!"
In "The Monster's Three Wishes", after Cookie Monsters wastes his wishes on "big, bigger, and biggest" trucks, he's left without his desired million cookies. That leaves him with only one option... "EAT! TRUCK!"
McCoy: Now, isn't that a thought? Here we are, antibodies of our own galaxy, attacking an invading germ. It would be ironic indeed if that were our sole destiny, wouldn't it? Kirk: Antibodies! AN! TI! BO! DIES!