If you've ever wanted to immortalize yourself in a video game, now's your chance. Microsoft and Bungie are auctioning off a chance to make a cameo voice acting appearance in Halo 3.
All proceeds from the Ebay auction go directly to Hollywood Arts. According to its mission statement, Arts "... reaches homeless young people through the arts including: video-gaming, music, movies, fashion, hair, makeup and drawing, providing them with artistic training and a chance to change how they see themselves; create a new community of mentors; and learn life and job-readiness skills to transition them off the streets into school or jobs."
Arts is also auctioning off a host of game related goodies here.
Also, it's interesting to note the Ebay auction listed above suggests the winning bidder will have to show up for a voice recording session by May 15, or else redeem his opportunity in Halo 4.
Bungie and Microsoft have stated the Halo trilogy will be concluded with Halo 3.