This is a strange contest, but I've always wanted to get my name in the credits of a high-profile videogame, so I'm willing to do anything.
This one is easy, though. All you need to do is name the song used in the E3 trailer for Gran Turismo 5, by artist Daiki Kasho. If your name is chosen for the track you'll find that your name will be placed in the Special Thanks section of the game's credits.
If you want to try your hand at naming a song, head to the Gran Turismo website. There you'll find the song and lyrics.
I've...I've got nothing for a song name. Maybe "Waiting" or something similar.