In no particular order:
Comptuers
Games (computer/xbox)
(minor) Reading
Camping
Television
Movies
Music
Sex
...
Music:
Everything but country.
Movies:
Anything from Pixar
Any CG-Animated Movie
THHGTTG
Any Monty Python
...
Television:
Scrubs
Mythbusters
Family Guy
Futurama
ATHF
...
Books:
The Hitchhiker's Guide to the Galaxy