I'd like to jump on the YouTube video review bandwagon.  I'm sure you're all tremendously excited about that. -_- 
Anyway, most of my consoles output AV (although I do have component cables for my Wii and PS2, as well as SVID for the SNES through Gamecube) sooo...what's a good capture card to get?  I'm pretty new to this sort of thing...