Some of the folks over at mcadcentral have it running on MacBook Pro. I personally would like to run it on a Mac Pro next spring (waiting for Leopard, dual quad core, and Adobe CS 3) under parallels. Too bad that PTC isn't interested (at this time anyway) in coding to OSX. Too much to do modernizing the Pro/e ui at this point I suppose. FYI: Unigraphics NX is OSX native.