Leadtek A250 Ultra GeForce4 Ti4600. Down to $235, supports S-Video out, has 128MB of DDR RAM clocked at 650MHz, and is a mean card altogether:
I break 300 FPS in Quake III with everything turned up in 1024x768. An get around 80FPS in Unreal Tournament 2003.
Just built a system for my buddy with it because he was so damn impressed by mine.
http://www.buyxtremegear.com/leadgef4ti46.html
(If you want to get this one, ignore the fan and heatsink crap at the bottom - it's not necessary to buy an addtional onem because the one you'd be getting has a MASSIVE heatsink on it - the picture on the page is NOT what the card looks like. Go to
http://www.leadtek.com/lrusa.htm to com to see the actual card).