
Actor
Mars Callahan
From Wikipedia, the free encyclopedia. Mars Callahan (born 1971) is an American actor, director, producer and writer. He is known, among other things, for the movie Poolhall Junkies where he served as director, actor and screenwriter. At the age of eleven Callahan toured with a children's musical group through thirty-seven states. At fifteen he received his first acting role in the television series The Wonder Years. After honing his acting skills in television he tried for the big screen and soon appeared in various films. Inspired by the directors he worked with Callahan decided to try working behind the camera and in 1998 shot his first short film The Red Bag. In a 2007 Hollywood Reporter interview he revealed that he has had serious health problems when doctors found a tumor in his right kidney. He lost his right kidney, his right adrenal gland and has been in and out of a wheelchair for years. Description above from the Wikipedia article Mars Callahan, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Acting

The Wonder Years
Steve · 1988

ER
Matt · 1994

That Thing You Do!
Ernie the Disc Master Engineer · 1996

Kalifornia
Walter Livesy · 1993

Poolhall Junkies
Johnny · 2002

Highway to Hell
State Policeman · 1991

Knots Landing
Man · 1979

I Know My First Name Is Steven
Victor (Age 14) · 1989

Clifford
Brian · 1994

The Children of Times Square
Brian (as Gregory 'Mars' Martin) · 1986

TV 101
Jack #1 · 1988

Dog Patrol: Operation Santa Paws
Agent Matters · 2025

