Apple iPhone and iPod Touch users can watch NBC shows like "The Office" for free. The video quality is not topnotch but still if you like NBC and love free stuff, you can;t really complain. Zune owners can enjoy the free shows too. NBC uses 3gp codecs and these file formats may find Zune a more hospitable place than iPhone or iPod Touch.
To watch the NBC shows, simply point your Safari browser to the NBC site. You'll need to be near a WiFi hotspot as EDGE is obviously not fast enough to download TV shows in whatever quality they come in.