Looks like the Hauppauge HVR-4000 could be the one to have
http://www.cyberlink.com/eng/press_room/view_1091.html
The Hauppauge WinTV-HVR-4000 TV tuner card offers the following features for watching and recording TV on a PC:
· Receives high definition DVB-S2 satellite TV
· Receives standard definition DVB-S satellite TV and DVB-S satellite radio
· Receives DVB-T digital terrestrial TV and DVB-T radio
· Receives analog PAL TV and FM radio
· Records video from an A/V source such as a VCR or set top box
Hauppauge and CyberLink will ship their solution in Q3 2006.
No mention of an MPEG decoder, but I'm not really sure of the benefits of that.
pros:
-"lighter" PC required since all MPEG decoding is done on the card
-potentially faster startup times (maybe <15 seconds under linux) as no need to start X windows
-generally cleaner usage, with all video going down the MPEG-PES path
cons:
-potentially harder to set up
-less options for picture control
-dubious support for different resolution types
-cost -if such a card even becomes available
