I first saw Heath in AKT and LOVED it, and him, though Paul Bettany as Chaucer almost stole the film from him. I haven't seen ALL of his films, but I have seen:
The Order/The Sin Eater...really bad movie, really good Heath.
The Four Feathers...not a great movie, but I liked it enough to buy a copy.
10 Things...I watch it every time it is on TV...that place where the paintball game took place is five blocks from where I grew up, in Seattle. Heath was just irresistable as Patric.
The Patriot...Heath was good, didn't like the movie.
The Brothers Grimm....silly, goofy, fun. Heath is adorable.
Lords of Dogtown....Heath was quite good in this role, I thought, even with those teeth.
Monster's Ball.....I loved this film, and Heath's Sonny just about broke my heart....His ability to convey so much pain was first seen there...no wonder Diana Ossanna saw Ennis.
Casanova....silly, goofy fun. Heath looks as if he is having the time of his life.
-Jackie
Oh, and he did some movie with sheep in it that I've seen, oh about 60-70 times, now. I kinda like that one.