Elgato's Video Capture takes in analog video—RCA or S-Video—and captures it directly to Macs via USB.

It's useful for converting VHS tapes, set-top box recordings, older camcorders and various other analog sources to H.264, which you can then transfer to iPods, iPhones and PSPs, depending on what you have. The Video Capture costs $100, but is probably worth it if you have a lot of old VHS tapes of MacGyver and Wings to transcode. [Elgato]