Steve Buscemi is an amazing actor! Reservoir Dogs, Con Air, and Fargo are a few of my favorite films of his. Also Animal Factory in which he directed. I checked out his profile on IMDB, and accoring to the trivia page, it says "..Showed up at his old firehouse the day after the World Trade Center tragedy in New York to volunteer. Worked twelve hour shifts for a week after the terrorist act, digging through rubble with his old comrades looking for missing firefighters.".
What a great guy!