Contaigous
 

I think the desert island bit is way overplayed, so here's the scenario:

There's a virus sweeping across the country. Mortality rate is almost 90 percent and you're going to isolate yourself in a bomb shelter in the backyard.You have food, water, and basic living supplies, but after adding your dvd player and television, you only have room for three movies.....Three movies to keep you entertained for at least six months until the outbreak is over. You're locked underground in a small bunker with no windows and only artificial light. What three movies would you take into isolation with you to keep you sane....or at least entertained?

an american werewolf in london.
half baked
saw2

The Exorcist
The Thing (Carpenter)
A good porno - hey, you said entertain myself!:D

Halloween
2001 Maniacs
Deadbirds

Fright Night
Napolean Dynamite
As Good as it Gets

Scream, Batman Begins, And... maybe The Matrix, or a comedy.

Dracula [1931]
The Frighteners
Pit and the Pendulum [1961]

Forrest Gump
Sleepless in Seattle(one of my faves)
Halloween

really? is it that good? i was about to get it.

See no Evil, Hear no Evil
Shaun of the Dead
Les Visiteurs

Lots of laughs there, I wouldn't want anything bringing me down...