In no particular order:
2. The Departed
Gotta see the Boys! They are classic characters of Canadian white trash culture! :)
The Departed is a Martin Scorsese remake of Infernal Affairs, a fine 2003 Hong Kong film starring Andy Lau and Tony Leung.
And finally, Forest Whitaker has been a consistently fine actor throughout his career (he goes back to Fast Times at Ridgemont High!). The clownish despot Idi Amin was one of the most horrifyingly fascinating figures of the last 50 years. I have no doubt Whitaker will bring the character to life onscreen and make him indelible -- or at least small enough doubts that I'm willing to risk $12. :)