I am an online student, DJ by night and Office Admin by day. The iPad will have an impact on all three phases for me. I currently have a touch that i check my emails, FB/Mafia Wars (yes I'm addicted) with, but the iPad will be much better for those actions. I don't play games on the go too much, I'm normally analyzing songs for my gigs. All of your post show how the iPad will certainly have a nitch of its own.
Will you be able to VPN into your business email with the Ipad?