That's Grandmaster Ted Gambordella. He is a guru however he would problably whip everyone's ass on this site.
He is:
9th Degree Black Belt
41 Years teaching experience
World Martial Arts Hall of Fame 1998
Grandmaster Instructor of the Year 2000
International Weapons Master Instructor of Year 2001
Martial Arts Weapons Hall of Fame 2001
World Head of Family Sokeship Council 1999
Martial Art Legends Hall of Fame 2001
Martial Arts Masters Hall of Fame 2002
World Black Belt Hall of Fame 2003
3 Times US Karate Sparring Champion
2 Times US Karate Weapons Champion
Given that fact, I don't really like him that much as he's also responsible for "Black Belt in a Box" product which has gotten a lot of people killed because they thought that a karate chop could beat a handgun....
. He has been parodied by Saturday Night Live for many years
www.blackbeltinabox