Stephen Tobolowsky is an actor best known for film roles such as insurance agent Ned Ryerson in Groundhog Day, and amnesiac Sammy Jankis in Memento, as well as such television characters as Commissioner Hugo Jarry (Deadwood), Bob Bishop (Heroes), Sandy Ryerson (Glee), Stu Beggs (Californication and White Famous), "Action" Jack Barker (Silicon Valley), Dr. Leslie Berkowitz (One Day at a Time), and Principal Earl Ball (The Goldbergs.)