It looks like TiVo To Go is about to come on-line.  Someone gave Matt over at PVRblog the link to get a Media Access Key for their TiVo account.  This key will be used to tag your shows and TiVo boxes so you can view your stuff on other devices.

What is TiVo To Go?  From their press release in January - "For the first time, TiVo subscribers with Home Media Option(TM) will be able to move their favorite programs stored on a TiVo DVR to a laptop for viewing on the road, or to any PC. For those who have a PC equipped with a DVD burner, programs can then be burned to DVD so users can take the TiVo experience with them wherever they go."