Normally to each his/her own but I'm making an exception now.
The fact that no one so far has put This Is Spinal Tap on a list (save
@I'm With Stupid as an Honourable Mention) means either none of you have seen it or you're all miserable cretins who cannot recognize a work of utter genius.
It is objectively one of the funniest films ever made. That's not an opinion. It's a fact. It re-invented comedy. It created the mockumentary. A good number of films on your lists wouldn't be here without it. It's still ridiculously hilarious today.
ZAZ, Monty Python, Woody Allen, Marx Bros, Parker & Stone, Mel Brooks -- cool -- I agree -- many, many funny choices. But no Spinal Tap?
For SHAME Bluemoon!
PS. Special shaming to
@hilts who put The Princess Bride but not Spinal Tap!!! Nigel Tufnel is the Six-Fingered Man, mate!! Rob Reiner directed them both!! Come on!!