Lorraine Nicholson in World's Greatest Dad (2009)

Robin Williams, Alexie Gilmore, and Zach Sanchez-Vitale in World's Greatest Dad (2009)

Evan Martin in World's Greatest Dad (2009)

Henry Simmons in World's Greatest Dad (2009)

Robin Williams and Alexie Gilmore in World's Greatest Dad (2009)

Robin Williams in World's Greatest Dad (2009)

Robin Williams and Bobcat Goldthwait in World's Greatest Dad (2009)

Alexie Gilmore at an event for World's Greatest Dad (2009)

Robin Williams and Billy Crystal at an event for World's Greatest Dad (2009)

Robin Williams, Billy Crystal, and Bobcat Goldthwait at an event for World's Greatest Dad (2009)

Billy Crystal at an event for World's Greatest Dad (2009)

Robin Williams and Bobcat Goldthwait at an event for World's Greatest Dad (2009)

Robin Williams at an event for World's Greatest Dad (2009)

Robin Williams and Zelda Williams at an event for World's Greatest Dad (2009)

Zelda Williams at an event for World's Greatest Dad (2009)

Daryl Sabara in World's Greatest Dad (2009)

Robin Williams, Lorraine Nicholson, and Alexie Gilmore in World's Greatest Dad (2009)

Robin Williams, Daryl Sabara, and Alexie Gilmore in World's Greatest Dad (2009)