
Jack Kosslyn was a drama coach in the Los Angeles area for over forty years and taught classes at his own studio in Hollywood. He also worked for Universal Studios and Warner Brothers, and coached performers including David Janssen, Mary Tyler Moore and John Travolta. He spent six years with Clint Eastwood's Malpaso Productions as a casting director, dialogue coach, and actor, appearing in small parts in several of Eastwood's films. In the 1980s, he helped form OPACT, the Organization of Professional Acting Coaches and Teachers.

High Plains Drifter
1973 · as Saddlemaker

Magnum Force
1973 · as Walter

The Eiger Sanction
1975 · as Reporter

Empire of the Ants
1977 · as Thomas Lawson

Play Misty for Me
1971 · as Cab Driver

Earth vs. the Spider
1958 · as Mr. Fraser

Breezy
1973 · as Driver

The Magic Sword
1962 · as The Ogre

War of the Colossal Beast
1958 · as Newscaster

The Death of Richie
1977 · as The Principal

Attack of the Puppet People
1958 · as Sgt. Paterson

Didn’t You Hear?
1970 · as Higby

The Amazing Colossal Man
1957 · as Lieutenant in Briefing Room

The Devil's Hairpin
1957 · as Tony Botari