There are some good resources out there… :
Fabchannel: They stream really cool concerts… bloc party, arcade fire, roisin murphy, … They even broadcast concerts live ! Tuesday 22.00 the Stereophonics in Amsterdam.
Google video has some nice videos, you just need to find them.Try typing in the name of a band or song. You’ll be amazed by the results. Example: the cool clip by soulwax – e-talking, or a fragment of top gear
You can even embed google videos everywhere you want. Check out paul stamatiou his tutorial.
Shoutcast TV is streaming video for winamp. There is a lot of absolute crap in the list, but if you look closer, you’ll find something to look at.
You know more ? comment away …