First off, loved the keynote (about to watch it for real now)...G5s are very impressive and I would love one (although I can't see buying a Tower w/o a Apple display and that is money I don't have)...however, having thought about it, we may not see iMac and Powerbook G5s for a bit. Why? Heat. Notice the Towers have 9 Fans? Notice that the front and the back are Mesh? I wonder how hot these machines can get... Also I think iSight is really cool but will be useless for me if it's only iChat...unless I start talking to people on the forums.