Yes. I actually wrote the theme to Mike Tyson's Punch Out. It was a really inspirational time in my life.
Just kidding. Although, I think it would be cool to have a job like that. I've always been into the theme type music for newer video games. I saw a show on TechTV about a guy that did the score for Starfox on Playstation. He basically just composed the themes on a midi program. Then he translated everything to paper and used a real orchestra.