There are literally hundreds of classic movies worth watching. I'll give 20 random selections off the AFI top 100 that predate Blade Runner (which appears to be accepted as old enough to be a classic). Jaws Star Wars To Kill A Mockingbird One Flew Over the Cuckoo's Nest Casablanca The Godfather The Graduate ET Chinatown Annie Hall The Maltese Falcon The Searchers Raiders of the Lost Ark A Clockwork Orange In the Heat of the Night The French Connection Rocky Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb The Wizard of Oz Raging Bull