Professor Kliq is an independent music producer. While he doesn't exclusively make action music, he's quite capable of it:
http://www.soundcloud.com/professorkliq ... -jonny-ost
On his blog, he says that he's always been interested in making a game soundtrack. He's already done the OST for Track Mania 2: Stadium and Valley, as well as a 10 episode action web series (Kung Fu Jonny). I don't know what his pricing is like, but he seems like he's very enthusiastic about his work. Vino, you should send him an e-mail and see if he would like to produce music for DA.