I was an extra in a film recently, entitled I Just Keep Thinking of Humphrey Bogart. I played one of a crowd of Humphrey Bogarts who terrorized the protagonist in the closing scene. I was recruited because of my fedora and overcoat, which fit perfectly into the role. However, not much of me can be seen in the final cut of the movie, but here's a screen shot where you can clearly see me, looking menacing in the background:

Actually, I don't really look menacing at all. I just look vaguely lost, like I wandered into the scene at the last moment and I'm wondering what on earth is going on. "Why are all these people dressed just like me?"

EDIT: I forgot to mention how awful the experience was. We had to smoke cigarettes as they shot take after take after take, and even if you didn't inhale, holding the smoke in your mouth and blowing it out still had an impact on you. My hands and gloves reeked of cigarette smoke for long after, and I felt nauseated and ill the next day due to the after effects of the smoke. Why would anyone smoke? I never understood, and now, having had to try it myself, I'm even more convinced that anyone who takes up smoking must be absolutely crazy to subject themselves to such torture.