this has come up in conversation on chat and on here too I think.. Have had tivo HD DVR for at least 6 months.. have LOVED it.. using it with 2 cablecards and no problems at all with standard or high def formats.
http://www.woot.com
I didn't get the Tivo, but the sellout.woot.com was a digital pad and pen for $20. That will be a great tool for me, at a great price.