He received his acting training at HB Studio[2] in New York City.

Culp appeared in a recurring role as Archie Whitman, the depression-era father of Jon Hamm's character Don Draper in the AMC series Mad Men.

[3] Culp also featured in the neo-noir detective video game L.A. Noire as Walter Robbins in the homicide case "The Studio Secretary Murder".

He co-founded the Walking-In-Your-Shoes technique with Joseph Cogswell, a body-mind approach.

[4][5] In 1992, he and Cogswell founded the Walking Theatre Group based in Los Angeles.