Yes, this is a stand-out episode.
Criminal Minds–No Way Out (1)–Starring Keith Carradine as Frank. Best guest shot ever.
Harvey Birdman: Attorney at Law:
The Dabba Don. Fred Flintstone is arrested for being a mob boss, and Harvey has to defend him.
Other honourable mentions:
Shaggy Busted (Shaggy of Scooby-Doo fame gets arrested for possession)
Death By Chocolate (Boo-Boo Bear is the Una-Boo-Boo, a Unabomber spoof)
Back To The Present is one of my favourites- The Jetsons travel back in time (from the far off year of 2002!) to sue the present for screwing up the world. Some great moments, including their epic trek from one side of Harvey’s office to the other, and a hilarious throwaway joke about the coal-powered superhero Industrial Lathe Man.
Both X, The Exterminator and X Gets The Crest are hilarious too.
This is probably as good a thread as any to admit I nearly made my username Mentok, The Mind Taker 
Last episode of Six Feet Under still gets me every time. Same goes for Ep 1 of Rome.
Eureka - the one where the Sheriff gets the underground bunker “Is that you doing a female voice?”
Two and a Half Men - “Hi, Mr. Horned One” easy to relate to all characters, they’re all part of the episode, all have great lines. The clincher was when the mother shows up as the Wicked Witch of the West.
In addition to being incredibly moving (and making me enjoy Little Drummer Boy, my least favorite Christmas carol) this episode also has one of the funniest lines of the series: President Bartlet is mildly castigating Toby for exceeding his authority (in ordering the military funeral for the homeless vet)…“So, have you made any other decisions I should know about? Are we still in NATO?”
I see a few suggestions for King of the Hill have already been put forth, however they are all wrong.
The episode where Hank fishes with crack.
Barney Miller: “Hash”–Wojo brings in special brownies made by his girlfriend.
Fresh Prince of Bel Air–The one where Carlton accidentally takes Will’s pills.
WKRP in Cincinatti - The Thanksgiving day turkey drop. I can’t believe no one has mentioned this.
“As God as my witness, I thought turkeys could fly.”
I would have gone with “An Explosive Affair, Part Two.”
“Don’t you people get it? It’s the phone cops!!”
Nobody has mentioned The Mary Tyler Moore Show–“Chuckles Bites the Dust”
The Bob Newhart Show–The Thanksgiving Episode
I’ve actually been trying to decide which episodes of Upstairs, Downstairs to show my mom to introduce her to the show. I’ve picked out one or two from each season, but if I have to pick just one, it’d be “Miss Forrest,” from the beginning of the third series. Elizabeth and Sarah are gone and Georgina hasn’t come in yet, but it introduces just about every other major character and shows perfectly the two things that made the whole series so wonderful to me: the intricacies and gradings of the Edwardian class structure, and how it was crumbling.
April 1912: Richard Bellamy has hired a secretary to help with his work in writing a biography, the Miss Forrest of the title. While Richard and his wife, Lady Marjorie, are away for the weekend and Miss Forrest is catching up on her typing, the Bellamy’s son, James, takes the opportunity to flirt with her and ends up inviting her to have lunch with him in the dining room. The servants, who were expecting a quiet weekend, are very much put out by this sudden change of plan and grumble a bit (downstairs), but when James orders his father’s best claret served, the butler Hudson absolutely refuses: he will not serve the master’s best claret over lunch, when Mr. Bellamy is out, and certainly not to a secretary! The man has his principles, and standards must be maintained. When James insists, Hudson resigns.
Mr. Bellamy and Lady Marjorie aren’t at all happy about this when they return, since Hudson is a very good butler and they don’t want to lose him. Richard wants James to apologize to Hudson, but Lady Marjorie thinks this is too much. Apologize to a servant? Impossible! She is also inclined to blame Miss Forrest for the whole thing.
In the end, Hudson agrees to stay on, not wanting to the household to be upset just when Lady Marjorie is about to go away on an extended trip to America. James apologizes. And the episode ends with a shocking twist (which one can foresee if one remembers the date this story is set).
Dr Who: The Daemons. Everyone fromthe classic years at their very best and one of the rare episodes where you don’t see the TARDIS at all.
Law and Order Prince of Darkness It plays like a full feature film all wrapped up in an hour - and one of the most disturbing endings they ever left us with
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