Tae Kwon-Do

http://www.itatkd.com – A good source of patterns

http:/www.tkdtutor.com – A great site with tons of information

Martial Arts Tricks

http://www.trickstutorials.com – Instruction videos for martial arts tricks. Use at own risk. Rated Mature.

Brazilian Jiu Jitsu.
http://www.roycegracie.tv – Royce Gracie’s web site
http://www.rodrigogracie.com – Rodrigo Gracie
http://www.gracieva.com – Royce Gracie Network School