Fifteen Geek Movies to See Before You Die...

Here's an interesting link to a list of fifteen geek movies to see before you die, and why:
http://blogs.chron.com/techblog/archives/2007/02/fifteen_geek_movies_to_see_before_you_die_1.html

Generally I agree with it, although I think they've left out Blade Runner, Aliens, and Sneakers. Galaxy Quest is almost on the list - it's definately very good, but it doesn't feel quite as important to me as the fifteen he listed and the three additional ones I would consider necessary.