TiVo now allows you to transfer mpg files from your PC to watch on your TiVo. Read about it here.
Actually, it’s been available since three whole days ago. They have filed an official request for me to send back my TiVo lemming membership card.
I hear this feature has been available on the replayTV for a long time already, but as the programming and user interface for TiVo is vastly superior (IMO) to replayTV (at least, as of the last iteration that I saw it), it is not really relevant to me. Now I just have to wait for the TiVos to get the upgrades to use with my new desktop software.