Oh yeah Shaolin Soccer! That was funny too but I don't remember it too much. Many Chinese comedy movies are stupidly funny.

BTW, I also remembered. I found Kill Bill funny too... in a sadistic kinda way. I laughed so hard when Sophie's arms were cut off and she was screaming like mad and the blood was like squirting from her cut joints. I also laughed really hard when Elle's eye ball got plucked by Black Mamba (what's her name again? I meant Uma Thurman's character).

And... what? Did I hear you right?! Rush Hour 3?! I HAVE TO WATCH THAT!

EDIT:
OMG!!! I just watched Liar Liar last night on HBO and IT REALLY CRACKED ME UP! I was laughing so hard in the boardroom scene where Jim Carrey couldn't lie and he kept on saying what he thought of the people in the room and the people there took it as a joke and everyone was laughing! IT'S SO CONTAGIOUS!!! I was choking already from laughing and I had to grasp for air afterwards.

Shaolin soccer
Kung Fu Hustle
Scary Movie 3 and 4

Shaolin Soccer
Tanguy

Ace Ventura:Pet Detective-This movie makes me laugh anytime...
White Chicks-Its really funny!
Rush Hour-There are jokes that come out in this movie...
Haunted Mansion-Its not scary! It's funny! specially the 4 head singing...
Dumb and Dumber-The dumber they get!

There's just so many!

Xaolin Soccer
Scary Movie 3
Dragonball Z Fusion Reborn

Hmm...This is a tough one...

Benny and Joon
The Texas Chainsaw Massacre (don't ask)
Monty Python and the Holy Grail
Much Ado About Nothing

I recently saw Blades of Glory... that was flippin hillarious

Well, aside from the Monty Python movies(a given), I still crack up at "Rocketman"....it may have been Disney, but the whole cast acts like idiots in the entire movie. To this day, my sis and i watch and laugh hysterically

Anyone still remembers Epic Movie?

"I hate these go damn snakes in this god damn plane"

"Do something"

"I hate these god damn snakes in this god damn plane"

"Why are you repeating that?"

"Because the fans posted that they love Samuel L. Jackson says it out" [the dialog is more or less about the same as this. I forgotten...]

Manos: The Hands Of Fate

Well, I thought it was funny even without the MST3K commentary.

Blades of Glory, yea that movie is freaken hilarious. (If some people are wondering, I got no school today XD)

History of the World Part 1

Mel Brooks is a genious haha

Ooooohhhh....This is difficult...
I'd like to say Benny and Joon, but I can't.
It'd have to be...
Gravitaiton OVA: Lyrics of Love.
That movie gets me everytime.

hell yeah, it cracks me up

I really divide comedy movies into three categories:
1) Monty Python
2) Mel Brooks
3) Everything Else

The four funniest movies I've ever seen include:
- Monty Python and the Holy Grail (She turned me into a newt!...)
- Animal House (Fat, drunk, and stupid is no way to go through life...)
- Caddyshack (Nananana...)
- Young Frankenstein (My name IS...FRAUNKENSTEEEEEEN!!)

Rush Hour 3
How High
Half Baked

...doesn't get much classier than that.

Most of you dumbass kids wouldn't know funny if it bit you in the ass.

So you are calling me a Dumbass?

I think those Movies are Pretty Funny thank you very much

Exactly

...My point exactly.

Well gezz man.

I Mean Rush Hour 3 is HELLLLLAAAA Fun.

That is Mess up calling someone a Dumbass.

For your info I'm One More year away from Being a Adult So Lay off man.

I have not seen many films that has caused me to cry out with laughter.
Most of the films labeled "Comedy" these days seem to be filled with cheap humor
designed for children and are just embarrassing to watch.

I still get plenty of laughs out of films like Clerks, Lock, Stock..., Human Traffic, the Python flicks,
The Green Butchers(Which is one of the best films i have ever seen). And several other Danish black comedies.
There are plenty more, but that's all i can think of at the moment.

Shaun of the Dead
Scary Movie, 2, 3, 4
Dickie Roberts: Child Star
South Park: Bigger, Better and Un-cut
Hot Fuzz
(A movie whose name I can't remember, about a guy making a documentary on America.)

No your all wrong the funniest movie ever is the Forty Year Old Virgin

Oscar,
The Great Muppet Caper,
Mr. Hobbs Takes A Vacation,
Beetlejuice,
and Bruce Almighty.

I just laugh my sorry butt off at those movies, even at weird moments where the rest of my family don't laugh and I wind up chuckling myself silly. Heh.

Date Movie
Epic Movie
Borat
And anything else from that series.

Eurotrip- I haven't watched it in a long time but man was that movie hilarious.

Hot Fuzz- I love how it spoofs Police Movies.

Accepted

Bruce Almighty/Evan Almighty (I like Bruce better though)

Superbad (My mother regrets taking me to that one. XD)

Click

And tons of others. I'll post them later.

-Dumb and Dumber 1&2
-The Diary Of A Mad Black Woman
-Pirates Of The Caribbean 1-3
-Beetlejuice
and lots more XD

UPDATE:
Johnney English,
Mr. Bean's Holiday,
Muppet Treasure Island,
The Emporer's New Groove,
Home Alone 1, 2, & 3.

Update:
Shaun of the Dead (I think I mentioned this one already)
Hot Fuzz (Simon Pegg <3)

Borat, especially the hotel scene, the first time I watched it, omfg I was laughing so hard it hurt my sides.

Shaun of the Dead, Accepted, Scary Movie 2, Waiting...., Borat, and Balls of Fury.

I now pronounce you Chuck and Larry. I don't why. It was just so darn funny.

For me, it's Mr Bean's Holiday.
Who wouldn't laugh when you see Mr Bean?

I've seen a lot of funny movies, but right now the only one I can think of right now is The Jerk.
Oh, and Monty Python.

First thing that comes to mind is Happy Gilmore XD

Mr Bean (all movies) xD

I can't stand Mr Bean...maybe because I think Rowan Atkinson has done far greater roles that truly show his talent i.e Blackadder. Johnny English is a fair mix of both characters.

Watched The Mask again the other day and I forgot how much that film made me laugh. Certainly not as gory as the comics but only Jim Carrey could get anywhere near such expressions.

I've seen a lot.
But the first one that comes to my mind is Elf, that movie never fails to make me laugh. xD

I can't remeber the exact title of that movie but iI think it's 'Jungle' or something like that, whatever !

it's story goes with a human then he slowly act like animals, different animals !
it's so ridiculous to see someone eating like a dog, peeing like a dog, running like a cat ...
it's so funny I could almost choke to death ! haha !

RoleModels is without a doubt my favourite comedy movie.

Well I think it is Bean the Movie . . .

Probably the Jerk. I laughed so hard during that movie. X3

And this isn't a movie, but I find The Office is just sooo funny. Michael is just.... *cringe*

"The Princess Bride" & "Robin Hood: Men in Tights"

Crank...If you have seen it you'll know why

Other worthy mentions:

Spaceballs - Propably one of the best parodies ever

Monty Python and the Holy Grail - British classic

Commando - Arnie at his best This movie wasn't meant to be taken seriously.

Two words....The Hangover

Especially:

Spaceballs: Greatest parody ever!
History of the World 1: Some parts where pretty boring but there were many high lights also. I love the Inquisition song
The Naked Gun trilogy: I love Leslie Nielsen! He's a comedy God!
Superhero movie: It's stupid but Leslie Nielsen saves what there is to be safed
Johnny English, Mr Bean: Rowan Atkinson
The Return of Jafar: Stupid, stupid, pointless sequel and that's why it makes me laugh.
Lion King 3: I love the original

There are probably even more but I can't think of any.

Probably 'The Hard Way' (with Michael J Fox & James Woods, both great with comedy).

'Stepbrothers'
'Elf'
'Mean Girls'
'Scary Movie 2'
'Borat' and 'Bruno'. Sacha Baron Cohen is hilarious.
'Young Frankenstein'

Pulp Fiction, it's funny in its own way..