Mars Callahan
Known for
Put plainly, Mars Callahan is an American actor with credits enough to make the description stick. Anything before 1986 is off the record. Comedy is where most of the work has landed. Two decades and more of screen work sit behind him. He is credited as Ernie the Disc Master Engineer in 'That Thing You Do!'. The record also includes 'Kalifornia'.
Mars Callahan
6 Movies
4 Series
Put plainly, Mars Callahan is an American actor with credits enough to make the description stick. Anything before 1986 is off the record. Comedy is where most of the work has landed. Two decades and more of screen work sit behind him. He is credited as Ernie the Disc Master Engineer in 'That Thing You Do!'. The record also includes 'Kalifornia'.
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Dog Patrol: Operation Santa Paws
Full Filmography
Dog Patrol: Operation Santa Paws
Agent Matters
2025
Film
Poolhall Junkies
Johnny
2002
Film
That Thing You Do!
Ernie the Disc Master Engineer
1996
Film
ER
Matt · 1 episode
1994
TV
Clifford
Brian
1994
Film
Kalifornia
Walter Livesy
1993
Film
The Wonder Years
Steve · 3 episodes
1988–1992
TV
Highway to Hell
State Policeman
1991
Film
I Know My First Name Is Steven
Victor (Age 14) · 2 episodes
1989
TV
Photos
Frequently Asked Questions
What are the most famous roles of Mars Callahan?
Mars Callahan is best known for roles in That Thing You Do!, Kalifornia, Highway to Hell.
How many movies has Mars Callahan been in?
Over a 40-year career (since 1986), Mars Callahan has appeared in 6 movies and 4 TV shows.
What was Mars Callahan's first movie?
The career of Mars Callahan began with The Children of Times Square (1986).
What is Mars Callahan's most recent movie or series?
Mars Callahan's most recent release is Dog Patrol: Operation Santa Paws, which premiered on November 13, 2025.
What TV shows has Mars Callahan appeared in?
On television, Mars Callahan has appeared in The Wonder Years, ER, Knots Landing, I Know My First Name Is Steven.
Mars Callahan
· Studio City, California, U.S.
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.Mars Callahan, licensed under CC-BY-SA, full list of contributors on Wikipedia.