There are two different Illegal Arts, though they're both similar.
- An art exhibit project by Stay Free magazine, they've released a DVD-R and CD of various works that are contested in the realm of copyright law.
- An organization that works on supporting Fair Use rights. They've worked with RTMark and put out some releases including Deconstructing Beck, Extracted Celluloid and Commerical Ad-Hoc. This one is hosed by Detritus.net.