The winner of the wildest guitar player has to be Michael Angelo Batio Hands down. Just watch his video here:
http://www.metalmethod.com/media.htm
click on tune in. The title is Michael Angelo's Speed kills.
This guy is just awsome And I ordered his instructional video as well.
I started learning guitar because of Randy Rhoads..but Yngwie J. Malmsteen is my biggest influence.