A friend of mine posted about Michael DiMartino in her blog. He captures the essence of songs with ASL and in original music videos. Here's his Youtube channel - definitely worth a look (but be forewarned his music videos are not always suitable for children).
In this (uncaptioned but signed) video Michael talks a little bit about his ambitions and his goal of raising $5,000 to fund two original music videos. You can read about the project here for more details. Michael's videos definitely are cool and worth a look!