Over at dbstalk.com, there is an extensive review of the Dish Network's DVR-921, a PVR that can record regular satellite signals as well as both satellite HDTV and OTA HDTV signals on one box. It's a long review, about 8 pages and around 70 screenshots are posted of the interface, setup, and on-screen samples from the unit. Looks like an impressive unit that packs a lot of features.
It looks a bit pricey, at around a thousand dollars, but I'm impressed that it can record over the air HDTV broadcasts and those delivered on satellite HDTV pay channels like HBO-HD. It'll be interesting to see if the HDTV-Tivo does that whenever that finally comes out.