In recent times, David Krumholtz has appeared in Oppenheimer onscreen and Leopoldstadt on Broadway…but Jessie and Leonard first became fans watching him in films like The Santa Clause, Liberty Heights, 10 Things I Hate About You, and Slums of Beverly Hills. He is the very definition of a working actor—on stage, film and television (where he spent five years as the star of NUMB3RZ), with a healthy outlook on his profession and its peccadilloes.