Try these, because the rest of the guys already hit "Strange Brew":
1. 'Ronin' Great action flick that doesn't get the respect it deserves.
2. 'Father Ted'(if nothing else, get a copy of "Speed 3", it's hillarious)
3. 'Sergeant York'(it's already been recommended, but I'll second it), probably Gary Cooper's masterpiece next to "High Noon".
4. 'The Godfather I & II'. Part three never happened in a truly just universe.
5. 'Goodfellas'. Next to the above mentioned, it's the greatest mob movie ever.
6. 'Mr. Roberts'. The good Fonda(Henry), James Cagney, and Jack Lemmon. It's been tried on stage and Broadway, but nobody has ever come close to being as good as these guys were.
7. Just about anything with the Duke, but for this list, check out 'Red River'.
8. 'The Deer Hunter', probably DeNiro's best movie, but it's long and for most, very depressing.
9. 'Who's Life is it Anyway?' See #8 for quick synopsis, except its Richard Dreyfuss instead of DeNiro. This is one of those, "What the **** would I do if it was me in that condition?" Very powerful movie, but don't let anybody who's a manic depressive or has suicidal tendencies watch it.