gamecube is awesome...number one reason for the SGBA...everyone who bought the GBA and not the SP can now SEE their games to play them...
besides...a lot of the GBA games are great...metroid fusion, castlevania...even if they're not as pretty as say xbox graphics... nintendo=quality
reasons to own a gamecube:
Metroid Prime
Legend of Zelda:The Wind Waker
Eternal Darkness
Star Fox Adventures
Star Wars Rogue Leader
Pikmin
Super Mario Sunshine