Slightly OT - Favorite computer movie

I was poking around my Apple TV tonight and spotted a movie I never got to see called “the computer wears tennis shoes” - a 1969 Disney movie with Kurt Russel about a mainframe. I put it on my short list to watch on a rainy day. It got me thinking...we all know the staple computer movies like Wargames and Weird Science, Lawnmower man, Matrix etc. Whats your favorite “computer” movie? Can be current or ancient, modern or mainframe. A one liner about why you chose it would be cool too.