This is an amazing site:

Fabchannel.Com – Live and on demand music concert webcasts – Broadband streaming video – Paradiso and Melkweg Amsterdam The Netherlands

With a team of dedicated, music loving directors, editors, programmers and promoters Fabchannel has built one of the biggest online concert archives in the world. 400 full-length concerts, festivals, performances, debates and lectures can be freely experienced in the Fabchannel video on demand archive. Live from the famous Paradiso and Melkweg Amsterdam.

You can check out, for example: Bloc Party, BRMC, The Magic Numbers or The Detroit Cobras, to name only a few.