sorry, been drunk and entertaining people without power all weekend 
BJJ = brazilian jujitsu
arguably it has currently developed into the best gound fight art.
Kenpo/Kempo
its an amercanized martial art. being relatively young/modern its seems a little more useful for getting you out of a situation in 1 piece. lots of quick powerful strikes, and joint locks.
hit up martialartstalk.com and do some reading there.
but thats just an opinion. everyone will have their own, so hit that site up, and talk to some others that train. :tup: