Few hip-hop artists do the human beat-box thing as well as Biz Markie. So consider it a boon for edutainment that the crazed old school MC was one of the artists who helped kick-off the new preschoolers show Yo Gabba Gabba! The Nick Jr. program has a decidedly hip slant. The Shins, Elijah Wood, Tony Hawk, Sean Kingston, and Rahzel all crop up on the first few episodes. Have a look at the Biz in action below, and take some time out of your day to enjoy his “Just a Friend” video over here.