I'm the proud owner of one of the Leadtek TV 2000XP cards.
I have to say, this thing rocks. I've installed it in both Windows 98SE and Windows 2000 without a single problem, just it in and ran the install CD. I've never actually had the tuner program freeze up, and the remote control (possibly the best feature) works flawlessly. Not only that but picture quality is better than a standard TV IMO, and it does time shifting (pause live TV).
Also, if you're into Linux, there's an excellent piece on using it
right here. It's also got instructions for the FM features and using the remote with lirc.
Sam