He also starred in the films Soldier Blue (1970) and Spacehunter: Adventures in the Forbidden Zone (1983), and has appeared in several others. He voiced the character of Justin, Captain of the Guard, in the 1982 animated film The Secret of NIMH, alongside the late Elizabeth Hartman and the late Paul Shenar, and subsequently named his son Justin, for the character. His most recent film is XXX: State of the Union (2005). He also has appeared in commercials for Miracle-Gro. He married the actress Rachel Ticotin on December 31, 1998.
Strauss also runs a successful citrus production business and is on the advisory board of the Los Angeles Arboretum. He sold a ranch property to the Santa Monica Mountains Conservancy. The ranch has since been acquired by the National Park Service as the Peter Strauss Ranch.