The grand prize (which has now closed) allowed the winner to be flown to Los Angeles to undergo a special motion capture session and have themselves immortalised as a character in the next Guitar Hero game! Two runners up (prize still open), will get the chance to hang out with Irish rockers, The Answer, during a recording session for their upcoming album. Other entrants will have the chance to win other prizes, such as Addict clothing, Guitar Hero III: Legends of Rock video games and an Xbox 360 video game and entertainment system from Microsoft.
Check out two videos below, both featuring Greg as a judge for the competition.
Montage of the best and worst entrants (Greg at 00:35):
Judges checking some clips:
For more information on the competition and to check for regularly updated clips head on over to the Official Release Your Rockstar Competition Website.