Lots of good suggestions so far (esp. Goodfellas and Die Hard).
Not mentioned yet: Commando and Predator. If there was a Commando+Predator channel, I doubt I’d be able to turn it off.
Goodfellas
Princess Bride
Jaws
Friday
Scarface
Fight Club
The Big Lebowski
Spinal Tap
T2
Gone With the Wind
Raiders of the Lost Ark
The Fifth Element
Jaws
Henry V
Master and Commander
The Ninth Gate
Blazing Saddles
Weekend at Bernie’s
Notting Hill
Die Hard
Sometimes, it’s amazing filmmaking perfection; other times, it’s just nailed-to-my-seat entertainment. 
The Shawshank Redemption
Goodfellas
The Hunt for Red October
Apollo 13
The Ninth Gate
Remember the Titans
That Thing You Do
Bad Day At Black Rock
My Cousin Vinny
The Replacements
Leon
Carlito’s Way
And I could watch the car chase though the tunnel from Ronin on repeat until judgement day. The only thing that makes it not my perfect car chase is that I long for a crash between two car transporters full of cars that then flip up and hit each other.
Oh, I forgot The Matrix (at least parts of it).
The Station Agent
Miracle of Morgan’s Creek
Tootsie
Radio Days
The Third Man
Seven Chances (and so many more …)
Stephen King miniseries: IT, Rose Red, The Langoliers, The Green Mile
Willy Wonka and the Chocolate Factory (the old one)
Jurassic Park
The Mummy and its sequels
The Birdcage
Any Harry Potter movie
Rocky Horror
Titanic
Raiders of the Lost Ark
Back to the Future
Most of the Pixar movies
Dirty Dancing
Office Space
The Green Mile
The Italian Job
any of The Transporter movies
Rocky Horror
Singin’ In The Rain
The Philadelphia Story
Desk Set
Dangerous Liasons
The Fast and the Furious (yeah, I know, but Vin Diesel!)
Ronin
Face Off
The Adams Family Values
National Lampoon’s Christmas Vacation
Indiana Jones and the Temple of Doom
Thelma and Louise
Fight Club
The Best Man
Drumline
Goodfellas
Pulp Fiction
Pee Wee’s big adventure
Speed
Groundhog Day
The Incredibles
I’m certain there are more.
The Shawshank Redemption
Goodfellas
Casino
The Hunt for Red October
Apollo 13
Remembering the Titans
Missisippi Burning
Star Wars
Airplane
The Wizard of Oz
Tommy
[ul]
[li]Desk Set[/li][li]You Can’t Take it With You[/li][li]People Will Talk[/li][li]O Brother, Where Art Thou?[/li][li]Arsenic and Old Lace[/li][li]Life With Father[/li][li]The Ruling Class[/li][/ul]
I love old black and white movies and the Coen brothers.
i saw alot mentioned already but one i can watch over and over is Grumpy Old Men
and the Goonies