I've got a brand new toy and I'm very busy playing with it. Getting the hang of Mac OS X's applications, shortcuts and idiosyncracies is going to take me a while, but it is a lot of fun.
One thing I already know for sure. Apple is so far ahead of the game of both Windows and Linux as far as usable desktops and it just works go. In no time I've downloaded, installed and set up Skype, Real Player and MSN Messenger for my use. My computing experience just went up by several orders of magnitude.