NY Times has an interesting article on the trend of homebrew PVRs and
cableboxes as well as the use of P2P filesharing tools to access TV shows.
The trend to use MythTV or bittorrent is getting big enough that TV studios fear to loose revenues from their TV DVD collections. Apparently TV studios try to get ahead of the trend early adopters lay-out and are working on offering legal downloads of their offering. This would be a great service and I would pay for it. To search and find a descend copy of a TV show in time on the net actually costs time. I hope Comedy Central starts soon to offer the Daily Show download subscription.
See also discussion on Slashdot.