Achieving a black belt involves a lot of hard work, focus, and dedication. Several stars in Hollywood have put in the necessary time and energy to obtain the rank -- and some may surprise you.
Sarah Michelle Gellar has studied kickboxing, boxing, and gymnastics and holds a black belt in Tae Kwon Do. Her experience came in handy while she filmed the popular cult TV series "Buffy The Vampire Slayer" from 1997 to 2003. Of course, a stunt double did most of the work.
Gellar has also appeared in the films "I Know What You Did Last Summer," "The Grudge" and "Cruel Intentions." She most recently appeared in the comedy "The Crazy Ones," opposite the late Robin Williams.
What other celebs have the distinction of being black belts? Click through and find out...