As long as you have a decent internet connection online TV can be watched in HD and Blue Ray formats with no problems.
According to the ATI Catalyst Control Centre the card uses about 700mb of system memory when it needs it boosting total graphics memory to 1.3gig. Many people complain about hypermemory but I have had no problems with TV watching or game playing. I am running Windows Vista Home Premium Service Pack 2.
With the card mildly overclocked in Catalyst Control and the processor clocked to 3.5GHZ I'm getting a 3D Mark 2003 score of over 9000 which is pretty good for a budget card and system.
Game wise I can play Medieval II Total War on medium resolution and high detail settings flawlessly. The only other game I tried was Speedball 2 Tournament, this does need setting turning down to be playable, but it's not a game I like much so havn't tried to get best settings.
Obviously games like Crisis and Call of Duty will be out of it's league, but World of Warcraft would probably be ok.
Hope this guide helps anyone with a new build or upgrade, just bear in mind this is a media card rather than a card for playing games.