Lenovo ThinkPad W700
I like my ThinkPad T61p pretty well. It's maybe not the best machine for graphics work, but it's decent. 3DS Max screams on it, and as a dev machine & VM host, it's really good. All that said, I still have to confess... I've been wanting a MacBook Pro. Bad thing for a MSFT guy to say, I know... but I hear they run Vista like nodody's business ;) Seems like all the SharePoint MVPs are using them these days.
Looks like there may be a change coming: the Lenovo ThinkPad W700. Think of it: quad-core processors, internal RAID, 8GB (!) of RAM - this thing is a portable server! Throw in a built-in graphics tablet/digitizer, the enormous display, 1GB video card... a graphic artist's dream. Definitely top of my Holiday wishlist!
