http://www.crutchfield.com/S-NfKaYN7rNfP/cgi-bin/ProdView.asp?i=035SVS4&s=0

This is what I have, I got it a few years ago and it's still going just fine. It adapts composite and S-video both into a single S-video connection to the TV. So I have the VCR, Nintendo, Camera, etc in it. Before, I had to swap cables because when S-video was plugged into the TV it blacked out any composite connections for some reason. This thing auto-switches sources too, which is convenient. Has a remote included too, which I've never needed.

Just one more to think about.