Interesting note about the movie:

The guys were filiming a kissing scene and Michelle Williams (plays Ennis' wife) stopped them and told them she wasn't feeling their kissing. She told Jake Gyllenhal that he need to kiss Heath Leadger like he was trying to steal her husband. Further, she asked them to walk around the set and randomly make out in order to surprise her and to help her keep the simmering anger and resentment required of her character. The guys agreed.

I am MORE than impressed by these guys. Will Smith had the opportunity to truly play a gay love interest in "Sex Degrees of Separation" and was counseled by many, including Denzel Washington, to NOT kiss another man onscreen for fear that it could ruin his career. Smith admitted a few years ago that he regretted not doing it, saying that a true actor gets totally into his role, especially given all the money they are paid and that it wouod have been a wonderful growth oppotunity for him.