YES I AM!
Reasons NOT to get Xbox:
Runs on Windows, unstable (crashed on the E3 floor in the middle of a game), the developer support isn't good, the number of consoles available is minimal (although that doesn't effect the system itself. As for the Current Software Library, besides DOA3 and maybe, MAYBE Halo (we don't know if it's good yet), there is the notable lack of a SINGLE killer app, and few franchise entries that would really make anyone look twice. Many Xbox games are available on other platforms - hardly a compelling reason to take a chance on this newcomer - and the exclusive titles are primarily original games that lack a proven track record to attract gamers. $300 risk
GameCube, on the other hand:
Super SMAAAAAAAAAAAAAASH BROTHERS!!!!
Luigi's Mansion (Bustin' Ghosts)
Zelda
Mario
METROID PRIME
Star Fox Adventures
Resident Evil (EXCLUSIVE ENTIRE SERIES)
Star Wars: Rogue Squadron 2!
Wave Race: Blue Storm
Soul Caliber 2
(there's a list of about 185 games in production)
$200 and you WILL be satisfied.