My top 3 are........

Trading Places ("hey, one gorilla, two gorillas, who cares?")
Blazing Saddles (see my signature)
I Robot (could watch it over and over)

There are many, many other films but I'm playing by the rules and givin' ya just three.

My Fair Lady (I could've danced all night)
Deep Blue Sea (who you gonna trust? me! you gonna trust me)

uuuummmmmm, there are so so many of them, it's hard to pick a third.

but if i was held at gunpoint and absolutely had to pick one, i'd pick...

Mr Brooks with Kevin Costner (havnt seen it yet but i have a feeling it's going to be one of my favs cos it's my favorite type of movie )

Other People's Money

Real Genius

Animal House

:)

1. American History X
2. The Matrix
3. Dogma.

1. Good Fellas
2. Godfather 1
3. Shawshank Redemption
4. Any and all straight porn (oh and lesbians are welcome too)

It's hard to name just three, since it depends on my mood.
THE QUIET MAN, I REMEMBER MAMA, THE 13th. WARRIOR.
I REMEMBER MAMA because it reminds me of all the old timers i grew up around. There are many more I enjoy but to put them in and order is difficult.
I usually go a movie for entertainment not for spirtual enlightenment (unless I'm with my girlfriend).

From Dusk Till Dawn
Fight Club
The Boondock Saints

Donnie Darko
Pleasantville
Der Untergang

Hey I remember this thread!

Mine currently (though they will probably change again by next week)
The Big Lebowski
Fear and Loathing in Las Vegas
Dark City

1. empire records
2. jay and silent bob strike back
3. happy gilmore

Closer
Dogma
Finding Nemo

Now there's some variety for you. :)

There Will Be Blood
Dead Ringers
Fright Night

Three? Only three? Gez, that ain't easy.

I'd say in no particular order:

The Outlaw Jose Wales
The Shawshank Redemption
Uncle Buck

Will give this a try...I'd have to list about 20.

In no particular order:

Schindler's List
Hotel Rwanda
Memento

(okay happier movies:
Singin' in the Rain
Love Actually...
couldn't help it.)

Yeah, 3 total? Who knows, I'll just throw out 3 from my list:

Shawshank Redemption
War Games (it's part of why I am the way I am, lol)
Star Wars: The Empire Strikes Back