With current technology, wifi-enabled TV sets can stream NetFlix from your wireless network. If I wanted to do that on an older TV set, what do you suppose would be the best way? Is there a device that does only that? Or maybe the best solution is a wifi BluRay player? Or a PS3? What's the most-economical solution?

I'm not particular about the output...HDMI, component, even S-video or composite might be fine. This would be used on a 24-inch LCD that I watch from 10 feet away.