http://www.hauppauge.com/site/products/data_hdpvr.html
$200ish, probably less.
works great for me ever since, but granted, it's been a while since i've looked into cap cards, so i'm sure there's better stuff out there these days.
what i really like about it is that you plug it in between your TV and your computer, meaning you can use your console as you would usually do and if you wanna record something, just start the programme and hit record.