Imminent death by burning at the stake, courtesy of the Witchsmeller Pursuivant. No way out!...or is there? One dropped voodoo doll from an unexpected source later, and the Witchsmeller expires spectacularly in a ball of flames, while Edmund, Baldrick and Percy are free!
The Rant Inducing Slight at the beginning of the final episode of the series, in which our slimy, pathetic protagonist is finally pushed too far and decides Let's Get Dangerous after being stripped of all his titles except Lord of the Privvies:
"Bloody cheek! I'll show them!" Blackadder pulls himself out of a Heroic BSOD, saving his own life and extorting a corrupt priest for everything he's worth.
The Great Booze-Up monologue, mentioned in the Funny page, is also this. Come on, that's some serious on-the-fly thinking to come up with an explanation that fast, from scratch, and actually make it WORK.
Edmund and Melchett's double Groin Attack on their guards in the series two finale.
Blackadder the Third
Edmund Blackadder, Esq. ends up alive, and fully set up to take over the prince's identity. And unlike the one of Back & Forth mentioned below, he doesn't have the help of a time machine; he's just that good.
Pitt the Younger unleashes a major comeback insult at Prince George in "Dish and Dishonesty".
Blackadder: Mr. Pitt is the Prime Minister, sir. Prince George: Oh go on! Is he? What, young snotty here? Pitt the Younger: I'd rather have a runny nose than a runny brain.
Sadly, it flies right over George's head.
Blackadder Goes Forth
Flasheart killing the Red Baron.
Flashheart: WHAT A POOF!!
Also later in that episode, Flash chewing out Captain Darling for not bothering to go look for Blackadder after he was captured (his excuse being that it wasn't a "valuable use of [their] time and resources").
Flashheart: Well, this isn't a valuable use of my time and resources, but I'm gonna do it anyway.
Flashheart: This! (Headbutts Darling right in the face, knocking him unconscious)
An oft-overlooked one in that episode is Blackadder's first time flying a plane. Despite having had almost no professional training, he manages to fly the plane reasonably well, even despite Baldrick messing around and actually manages a successful crash-landing (at least it's implied he did).
Baldrick's rant about the pointlessness of war, especially the one they're in, in the finale of Goes Forth. For once, Blackadder has nothing to say in response.
The last scene of Blackadder Goes Forth was a Dying Moment of Awesome for the entire cast (sans Melchett), the editor, and the BBC for having the guts to broadcast the episode on Remembrance Sunday with only one complaint.
The future scene from Christmas Carol, if Ebenezer Blackadder became bad.
Although it backfires on him in the end, the fury of Ebenezer Blackadder unleashed at the end of Blackadder's Christmas Carol.
The end of Back & Forth, with a Blackadder finally becoming king, as his long-ago ancestor first wanted in series one.
Not only that, but he's got a beautiful wife, he's adored by the nation, and he rules alone having dissolved Parliament.
It actually gets to the point that Edmund's descendants will become rulers of the whole fuckin' universe.