Anyone tried (or does now) watch TV on a PC ? I have Dish Network (satallite TV) for my TV but was wondering how to channel it to my PC.

Don't have it set up myself but you will need some type of TV tuner in your PC - I've seen internal cards and external USB devices available. It'll have a connector on it to attach a coax cable.

TV tuner card

Laser's correct... you'll need to have a TV Tuner card or any USB TV tuners to be able to watch TV on your computer. I have one at home myself and I only use it to transfer videos from my camcorder to my computer and then burn it onto a DVD. There are tons of TV Tuner cards out in the market and I'm sure that you can find one that suits your needs.. :)