Adam Horovitz

Adam Keefe Horovitz, better known as Ad-Rock or King Ad-Rock, is an American rapper, guitarist and actor. He is best known as a member of the hip hop group the Beastie Boys. He is married to musician and feminist activist Kathleen Hanna.

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30 ROCK · S3, E22

Kidney Now!

Jack builds a relationship with his biological father; Liz gets attention as a relationship expert.
TOP CHEF: JUST DESSERTS · S2, E6

Sabotage

The remaining pastry chefs will be given a "License to Ill" as they raid the first ever "Top Chef Beastie Boys Pantry," where they must use the ingredients, named after the band's popular songs, to create a Beastie Boys-inspired dessert appropriate for a street art event. Jordan Kahn and Adam "Ad Rock" Horovitz serve as guest judges.
THE EQUALIZER · S1, E9

Mama's Boy

The Equalizer goes undercover as an international drug smuggler to help a mother who has discovered her teenage son is a drug dealer. Christine Baranski and Adam Horovitz guest star.