We've talked a lot about TV tuner cards and Windows, but what if you're Devoted to the Penguin? LinuxJournal.com has a nice article that walks you through setting up a Hauppauge WinTV Radio on the Fedora Core 2. The tutorial states:

The installation process was surprisingly quick and easy. Red Hat and Fedora Core use kernels that provide many elements as loadable modules. This eased installation considerably, as otherwise, one would have to recompile the kernel to get the needed modules. I tested with kernel version 2.6.9-1.6_FC2SMP. There have been reports of problems with the 2.6.10 kernels, and I can confirm the stock Fedora Core 2 kernel 2.6.10-1.12_FC2SMP doesn't work. Because I use the kernel version listed in the system specifications above, I'm not affected. However, some people report success with various Hauppauge cards and the 2.6.1 0 kernels in Fedora Core 3. Please be aware that kernels change often, and any issues existing at the time this article was written may be resolved by the time you are ready to install the card.

Okay, if you're the Linux type, be sure to check it out.

Getting Started with a TV Tuner Card