Monty Python and The Holy Grail/YMMV

"''We're Knights of the Round Table, our shows are for-mid-able
 * Acceptable Targets: The French, naturally. It's a British film. Why else would they have that outrageous accent?
 * To say nothing of BLOODY PEASANTS.
 * Big Lipped Alligator Moment: The "Camelot" song. 'Tis a silly place, indeed.
 * INTERMISSION
 * Not to mention the opening credits' moose dialogue at the bottom.
 * And the Sun and clouds jumping up and down, causing an earthquake.
 * Crosses the Line Twice: The Black Knight getting dismembered.
 * John Cleese admitted as much in his commentary track. He explained that some viewers in America found the sequence horrifying because of Vietnam War footage on the news; however, he noted that they began to laugh when BK's first leg got hacked off and he was still raring to go.
 * Crowning Moment of Funny: The King Arthur/Black Knight duel and the Bridge of Death.
 * And the Holy Hand Grenade of Antioch, and the French launching the wooden animals at that same servant, and you know what? It's a Monty Python movie, the whole thing is an extended CMoF.
 * Discredited Meme: The constant use of quotations from it has caused it to become popular to mock people for quoting it so much.
 * Ensemble Darkhorse: The Black Knight
 * Hilarious in Hindsight: The Black Knight and Lancelot is played by the same person (John Cleese). And then,
 * Memetic Mutation: The film is the source of too much of this to count. Check them out here. More accurately, every single line in the movie seems to have become a meme.
 * In fact, it's a Fountain of Memes.
 * Painful Rhyme: The "Camelot" song is built around these, and it's even lampshaded:

But many times, we're given rhymes that are quite un-sing-able..."


 * Seinfeld Is Unfunny: The best jokes from this movie have been memes for so long and are so familiar by now that it might not be clear why they were ever really funny in context.
 * The Weird Al Effect: It can be very hard to take Arthurian legend seriously after seeing this movie.