Yup, I'm making the switch. I've been a Windows user for years, and while I have always had a Mac around for testing and working with client files, I've never used one as my primary machine.
I've been waiting for the new MacBook Pro's to be released for a few months, and when I saw they came out this morning I decided to take the plunge. If nothing else, it'll be nice to have a 17" laptop that doesn't weigh 20 lbs!
Check out the new specs here: http://www.apple.com/macbookpro/
I'll write up a review when it arrives. Until that time, let the 7-10 business day countdown begin.