I'll just second OP and say that my girlfriend keeps watching that real shit over and over to the point that we can almost act out the entire thing.

Elf.

Grandmas boy and role models.

Lots to agree with here but I can’t believe I don’t see Snatch anywhere.

Mr Bean making a sandwich, in particular the person laughing at 3:53

Tropic thunder

I love White Chicks also, one of my top movies along with Mean Girls and Bridesmaids

See No Evil, Hear No Evil
Grabbers
Kung Fury

Penguins (of Madegascar): The Movie is the funniest film ever made and infinitely quotable.

hot shots part deux

Lego Batman. If you haven't seen it, go; go now.

The Other Guys

It's a Mad, Mad, Mad, Mad World leaves me in stitches every time.

Sean of the Dead and Clerks.

Bowfinger

Superbad. Airplane

I watch both VERY often and still love all the jokes

Most of my favorites have been mentioned, but I haven't seen The Party (1968) or Clue (1985) mentioned yet.

Kung Fury

The Return of the Pink Panther

Without a paddle. I haven't seen it in a few years but I remember just absolutely cracking up over it.

The House Bunny

The Court Jester.

Austin Powers. Introduced my dad (who bears a striking resemblance) to it and we had a right laugh watching together

Hotel Paradiso

White Chicks as well. Total classic in Brazil since release.

Platoon

The Incredible Bulk.