Mars Callahan

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 serv

Known for

Dog Patrol

Poolhall Junkies

That Thing You Do!

Clifford

ER

1994 | 1 episodes

Kalifornia

Highway to Hell

I Know My First Name Is Steven

I Know My First Name Is Steven

1989 | 2 episodes

The Wonder Years

The Wonder Years

1988 | 3 episodes

TV 101

TV 101

1988 | 1 episodes

The Children of Times Square

Knots Landing

Knots Landing

1979 | 1 episodes

Known for

Acting

Also known as

Gregory Mars Martin