Newegg's doing a sweepstakes for their newsletter subscribers. 3 grand prizes are an Xbox 360 system with a Guitar Hero 3 bundle, so pretty solid. Just give 'em your info, and good luck!
http://promotions.newegg.com/NEemail/Nov-0-2007/Promo110107in/Sweepstakes/index.html?cm_mmc=EMC-IGNEFL110107-_-Sweepstakes-_-EO-_-Guiterhero3&CMP=EMC-IGNEFL110107&ATT=Guiterhero3
http://promotions.newegg.com/NEemail/Nov-0-2007/Promo110107in/Sweepstakes/index.html?cm_mmc=EMC-IGNEFL110107-_-Sweepstakes-_-EO-_-Guiterhero3&CMP=EMC-IGNEFL110107&ATT=Guiterhero3