Developers can get a free copy of Vista and Office Pro 2007!
Check out this video:
http://www.youtube.com/watch?v=-SZzAT-S5DQ for a laugh and visit the site they mention at the end of the video (powertogether.com) for a chance to win a copy of Windows Vista Business and Office Pro 2007; for details take a look at the "Offering Details" link at the bottom of the page.