But that is why I own a separate ATI card, to get excellent DVD playback. The DVD decoder is built into the video card and not the TV card.
If you search the net for products that are built for tv recording (SageTV, BeyondTV etc etc), they will all push the HAuppage PVR250MCE. IT has the best tv decoder chip (Philips something or other). and hardware Mpeg encoding...this is very important otherwise all the work will be placed on your CPU.
You can also wait until companies start using the new ATI theatre 500 PRO chip on their tuner cards which is supposed to be the best tv viewing experience yet (upgrades it to near HDTV quality) but it was just announced Sept 14th and noone is shipping as of yet although Sapphire has their product page online now.
I have a friend who upgraded to the pvr250 card and there is no comparison of quality...just be away that tv software can be configured a million different ways and they don't all come with the best setting by default.
I found that Media Center has decent default settings and that is what I am using until I hear about the results of the ATI chip. If it does what it says it will do, then I will buy a tuner card with that built into it otherwise I will upgrade to the PVR 250. Then I will upgrade to the ATI 9800PRO so that I can enjoy the new VMR9 features that are available through Direct X 9 that only 9800 Pro and up can do 100% without problems (9600XT is fine but some people complain it can't do all the features stably)