Movie reviewers seem to always suck, usually too artsy and out of touch with the notion of Entertainment. I figure you have already seen The Godfather I/II, Star Wars II, Jaws, and others of the mega-hit/mega-classic ilk, so I'll just recommend good films that you may not have seen.

Must See In Your Lifetime:

1. Manhunter - Making Art can get a little messy.
2. Slapshot - Brilliant multi-level satire in a hockey rink.
3. Hard-boiled - Hong Kong spaghetti
4. Harold and Maude - An ultra-Romantic film about grief
5. Chungking Express - It was love, what can you do? Make sure you watch the 2nd half of the film, that's what.
6. The Shining - good budget + good director + good actors + good story = instant classic.
7. Ikiru - one man, one life, all in the context of Japan in the first half of the 20th century.

Highly Recommended (i.e. you really should see these ;):

1. Real Genius - Cal Tech mythology with a silly plot, but I wanted to be like Chris Knight.
2. To Live and Die in L.A. - compare the "Art is Pain" in this to the "All Night Tool" creation in Real Genius.
3. Soylent Green - The System is broken
4. Zardoz - The elitist system isn't so elitist; it's broken, too.
5. Clockwork Orange - The System is broken
6. Rosemary's Baby - not scary, just visually fun.
7. Blind Video Days - if you ever want to see what skating's about
8. The Usual Suspects - drama, tension, twist
9. The Sixth Sense - drama, tension, twist
10. The Abominable Dr. Phibes - Revenge! (probably best if you're in high school)
11. Airplane - silly boyish humor
12. The Kentucky Fried Movie - more of that humor
13. Once Upon a Time in the West - poetic violence
14. The Killer - Hong Kong's Sergio Leone
15. The Professional - French Spaghetti
16. War Games - the film that broke hacking
17. The Matrix - the film that broke hacking
18. Repulsion - Catherine Deneuve goes nuts, Roman Polanski directs
19. Belle de Jour - Catherine Deneuve goes nuts, Luis Buuel directs
20. Suspiria - The arc from Polanski's Rosemary's Baby to Kubrick's The Shining passes through Suspiria. It's ostensibly about witches.
21. Secretary - Well-adjusted Sado-Masochists live next door.
22. Braindead (Dead Alive = US release) - Peter Jackson's hilarious slaughterfest = Evil Dead 2, Down Under. Get the unrated version, the rated version makes no sense, so much was cut out.
23. Fist of Legend - Jet Li remakes Fist of Fury adding in a layer of thought.
24. Super Troopers - a documentary about my home state's State Police.
25. There's more....
26. Kentucky Fried Movie - awesome scatterbrained high school humour (Catholic High School Girls in Trouble).
27. The Mist - Unexpectedly Shakespearean film about Cthulhu and the failure to lead. Think "A Midwinter Night's Scream"
28. Hostel - Unexpected Shakespeare tackles Torture Porn and Justice.