Most of these have been mentioned and they are no in any particular order, however I love action & mobster flicks. Denzel would be my favorite actor.
1. Training Day
2. Gotti
3. Godfather Part 1 & 2
4. Kickboxer
5. Bloodsport
6. All Rocky movies (especially III & IV)
7. Cheech & Chong (Up in Smoke & Still Smoking)
8. Jaws
9. The Great Escape
10. Shawshank Redemption
11. American Gangster
12. Scarface
13. Ace Ventura
14. The Gods Must be Crazy
15. Goodfellas
16. Man on Fire
17. Flight
18. Taken
19. Lone Wolf McQuade (that just popped in my head)
20. Mad Max
21. Braveheart
22. Gladiator
23. The Program (football movie from 94')
24. Old School
25. First Blood (The only Rambo I like)
Many more, but the past 5 years or so me the wife have been more into shows over movies. I know this thread isn't about shows, but to name a few: The Wire, Sopranos, Breaking Bad, Boardwalk Empire, House of Cards and Impractical Jokers (hilarious show).