Blood Daimond is a pretty darn good flick. I'm not gonna lie, DiCaprio has become a very convincing actor...if you would've said that to me ten years ago I would've sharted. It doesn't hurt that Jennifer Connelly is so easy on the eyes either.
Flags wasn't bad...it wasn't what I expected. Thoughtful, but kind of ambiguous for the viewer. Worth watching though IMO. I'd like to see the sister flick Letters from Iwo Jima.
Speaking of DiCaprio, Scorsese's The Departed was outstanding IMO. If you can get past the canoli eating prerequisite gangster stereotype, I think you'll find that this movie deserves a position on the podium for Mob movies.