I cant really predict Geist because i have no idea really how good it will turn out or how well it will be marketed... i'll see about that. I'll through some more predictions into the fray, for the month of September in the US (which can actually be verified when the September numbers are released)
F-Zero GX - 130k
Mario Golf - 50k
Soul Calibur 2 - 250k
Billy Hatcher - 38k
Hardware sales i predict will be
Gamecube - 180k
Xbox - 180k
PS2 - 300k
and in Mario Kart's opening month in November i predict around 1 million.