If someone wants to play 480p content, they don't need a HDTV like you said they did. There are 480p televisions out there. It's known as extended definition. 480p isn't HD. I believe Sony even offerred a few EDTV CRT's a few years ago before the rush towards LCD/DLP/Plasma started.
They're the best way to play 480p content since they're natively 480p.