What about USB Audio/Video In?
I've seen some USB Audio/Video in adapters from Berklin and Eskape Labs. I like the Eskape brand because they come with a built in TV tuner and come for around $100, the Berklin Video Bus II (I think its Berklin, correct me if I'm wrong) is only $79 dollars. I know how it feels to have to turn your head to watch TV, I even once hooked up my old Power Mac 7500 to a VCR, used the VCR as a TV tuner and set the Mac so that Apple Video Player showed the Video In. It worked great! But it was big and got in the way, plus I now use the VCR as a TV tuner for my TV, (TV's TV tuner broke 🙁 ) Anyway, I would look into the USB A/V in adapters, they are pretty cheap and come with software, I would recomend Eskape Labs, although I don't own one, I saw them at the MacWorld NY 2001 Expo and they looked good. Good Luck!😛