Dammit you got my early edit, i decided to use a Peter Gabriel pic instead, that Wakeman pic appears on here enough already.
Prog is pretty popular, dispite it's complete lack of mainstream success, save bands like The Mars Volta and Tool... Progarchives is a big site which features bios of different bands and feateres a song streamer like Myspace so you can play free MP3s without downloading them, nearly every band featured has a MP3 available.
It's the first link in my sig, the second one is to a site called Gibraltar, which i like to refer to as the proglopedia.