Recently I was informed about a very cool and much needed endeavor. It is an awesome new streaming web radio site dedicated to every type of video game inspired music. The aptly titled 8bitfm is that site, and you can head over there and listen right now to find plenty of nerdcore, VG rock, chiptunes, remixes, and even lots of straight VGM compositions. So they definitely have it all, no matter what type of VG inspired tunes you enjoy! They also have a few daily radio shows for different genres.
The site just started up but it looks like they are doing everything right to become a great musical source in the community, so definitely listen in and keep an eye on these folks!