Monty Python and the Holy Grail/Funny

Short answer to Crowning Moment of Funny for MPatHG: EVERYTHING. Long answer:

The opening credits with inserted subtitles. With said subtitles in faux Swedish having nothing to do with the movie or the credits at all.
- "A moose once bit my sister"
  - "Mind you, moose bites can be pretty nasty..."
- The producers halt the credits in order to get rid of the Swedish subtitles... only to have the second team of credit-makers still obsess over moose being in the film. THAT team gets sacked, with a third team of credit-makers hired on from some South American firm... that quickly inserts llamas into the credits. Somehow, this is ignored.
This troper will leave the next CMoF for the next poor fool...
- Bring it!
"I'm not dead!"
- "I feeeeel happy!"

Peasant: Who's that then?
Dead Collector: I dunno, must be a king.
Peasant: Why?
Dead Collector: He hasn't got shit all over him.

"Burn the witch!"
- "Churches float!"
"What, behind the rabbit?"
- "THE HOLY HAND GRENADE OF ANTIOCH."

"One, Two, Five!"
"Three, sir!"
"Three!"

- - "And the people did rejoice and feast on carp and orangutans and breakfast cereals..."

"Skip a bit, brother."

The animator suddenly having a heart attack.
The French bombarding Arthur and his men with livestock.
- "EYY, THIS ONE IS FOR YOUR MOTHER! *throws duck*"
"I'll bet you're gay!"
- "...I am not."
"'Tis but a scratch!"
- "A scratch?! Yer arm's off!"
- "I've had worse..."
"What is the airspeed velocity of an unladen swallow?"
- - African or European?
  - The argument at the very beginning about this very subject.
- "What...is your favorite color?"
Any appearance of the French.
- "Your mother was a hamster and your father smelt of elderberries!"
  - Fetchez la vache!
- "Now go away or I shall taunt you a second time-ah!"
"Brave Sir Robin ran away!"
- "I did not!"
"We are the Knights who say... Ni!"
- - "Did you just say 'ni' to an old woman?!"
- "We want...a shrubbery!" [[[Scare Chord]]]
- "You will chop down the tallest tree in the forest wiiiiiiiith.... a herring!" [[[Scare Chord]]]
The Ending, because who the hell expected that?
"She turned me into a newt!... I got better..."
As gory as it was, you have to admit you laughed when you saw the Killer Rabbit scene.
"I thought your son was a lady"
- "Well, I can understand that"
The Black Knight scene.
- "I've had worse. Come on, you pansy!!"
- "Look, you stupid bastard, you've got no arms left!" "Just a flesh wound!"
- "What are you gonna do, bleed on me!?" "I'M INVINCIBLE!!!" "You're a loony."
- "Ooh, I see. Running away, eh?? YOU YELLOW BASTARDS!! COME BACK HERE AND TAKE WHAT'S COMING TO YOU!! I'LL BITE YOUR LEGS OFF!!!"
This:

"There, they met sir Lancelot and Sir Galahad. And there was much rejoicing."
"Yaaaay..."
"In the cold of winter, they became forced to eat Robin's minstrels. And there was much rejoicing."
"Yaaaay...."

The entire Burn the witch scene, especially: "She turned me into a newt!" *pause* "A newt?" *pause* "I got better." "BURN HER ANYWAY!"
Castle Anthrax. Galahad wants to face the peril.
"One day all this will be yours." "What the curtains?"
Dennis the peasant taking apart the legend of the Lady of the Lake and Excalibur to the increasing annoyance of Arthur:

King Arthur: The Lady of the Lake, her arm clad in the purest shimmering samite held aloft Excalibur from the bosom of the water, signifying by divine providence that I, Arthur, was to carry Excalibur. THAT is why I am your king.
Dennis: [interrupting] Listen, strange women lyin' in ponds distributin' swords is no basis for a system of government. Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony!
King Arthur: Be quiet!
Dennis: Oh, but you can't expect to wield supreme executive power just because some watery tart threw a sword at you!
King Arthur: Shut up!
Dennis: If I went 'round sayin' I was an emperor, just because some moistened bint had lobbed a scimitar at me, they'd put me away!

The Bunny of Caerbannog.