I have a Leadtek Winfast TV2000 XP or some such nonsense like that. It's on
Newegg for like $53. I love it. Came with a remote and has an FM tuner built in. Don't use the FM tuner, but I use the remote all the time. Watch TV fullscreen on my 21" monitor as I fall asleep, hit the power button on the remote and off goes the computer (Windows software that comes w/ the card doesn't do that, I hacked it up under Linux). Full screen is no problem on my P3-700 and GeForce2 MX.
Watch out for the cheap-o ATI cards at Circuit City and Best Buy. They only have mono sound. I'd also recommend against getting a video card and tuner card in one. If you want a new video card, you'll end up paying for that tuner capability twice.
Get a video card with VGA and DVI outputs, use a DVI->VGA convertor, and you have dual monitor support (on most video cards w/ dual outs).
