During his run onThirtysomething, People magazine named him one of the "50 Most Beautiful People". Horton acted in television shows including St. Elsewhere, The White Shadow, Dallas, Eight Is Enough, "In Treatment" and The Geena Davis Show, played the lead in the short-lived series Brimstone, and played Crane McFadden in the one season series "Seven Brides for Seven Brothers". He played Jacob in the 1982 feature film Split Image, Father Mahoney in the 1986 feature film "Where the River Runs Black" Roy Fox in the 1996 film "Two Days In The Valley" and played Burt in the 1984 Stephen King movie Children of the Corn. He had a minor role in Cameron Crowe's Seattleromantic comedy, Singles. He played Harry Landers in the "Hospital" skit from Amazon Women on the Moon opposite wife Michelle Pfeiffer, whom he had previously directed in the ABC Afterschool SpecialOne Too Many in 1985. Horton also appeared in the 1997 TV movie version of the Jon Krakauer book , playing Scott Fischer, the leader of the disastrous 1996 climb on Mount Everest. He was also in the movie Sideout as Zach Barnes, a down and out ex-volleyball champ. As a director he has worked on several television series including The Shield, Thirtysomething, The Wonder Years, Once and Again, and directed the pilot for Grey's Anatomy as well as pilots for Class of '96, Birdland, Dirty Sexy Money, The Philanthropist and Reconstruction. He directed the 1990 film for television Extreme Close-up as well as the 1995 feature film The Cure. As a producer he produced Reconstruction, Lone Star, The Philanthropist, The Body Politic, Grey's Anatomy, Six Degrees and Murder Live. He appeared in Who Killed the Electric Car? and is on the board of directors of the Environmental Alliance. As of 2010 Horton is an executive producer and director of Grey's Anatomy on ABC, and produced and directed NBC's The Philanthropist.
Personal life
Horton has been married twice. His first marriage was to Michelle Pfeiffer, whom he met in Milton Katselas's acting class. He pried the future Hollywood star from a vegan cult: "I don't believe in women being saved by men, but... I was very lucky," Pfeiffer later recalled. "Peter drew me back into the world." The couple married in 1981. Of their relationship, Pfeiffer reflected, "I broke one of my own Ten Commandments never to date an actor, especially one you study with. Then I married one!" The couple divorced in 1988. The divorce was amicable with Horton saying both his and Pfeiffer's devotion to their careers affected the marriage. He has been married to Nicole Deputron since 1995 and the couple have two children, Lily and Ruby. He is a brother-in-law of Egil Krogh, a former White House Plumber who was convicted in the Watergate scandal.
