Career beginnings

After college, Lange started in theatre appearing in local Oakland productions and as guest artist in residence at the University of Santa Clara. Later, he joined the New Shakespearan Company, acting in plays at the University of California, Berkeley.^[2]

Lange made his Broadway debut in the musical Hair and was featured in the first national touring of the show.^[3] He also performed in a one-man show, Behind the Mask: An Evening with Paul Laurence Dunbar.^[4]

Lange's first screen appearance was in the documentary film Wattstax in 1973.^[5][6] After appearing in the film Black Belt Jones in 1974, he portrayed Junior on the series That's My Mama before landing the role of the ship's bartender, Isaac, on The Love Boat in 1977, opposite Gavin MacLeod.

In the early 1980s, following a letter of recommendation from Lynn Redgrave (whom he met on an episode of The Love Boat), Lange attended a summer school at the Royal Academy of Dramatic Art to perfect his Shakespeare acting skills.^[7]

After he left the show in 1987, Lange appeared in various films and in guest roles on 227, In the Heat of the Night, Evening Shade, Boy Meets World, The King of Queens, Scrubs, Drake & Josh, Psych, The Cleveland Show, and Are We There Yet?.

Directing and writing

In 1977, he co-wrote the screenplay for the drama Passing Through, starring Nathaniel Taylor. During the run of The Love Boat, Lange also served as director and screenwriter of several episodes of the series. In 1999, Lange directed two episodes of Love Boat: The Next Wave, the UPN series based on The Love Boat. He also directed episodes of Moesha, Dharma & Greg, and Eve. In 2008, he directed the drama For Love of Amy.

Lange has also done extensive theater work as playwright and stage director. He has penned 17 plays, including George Washington's Boy, a historical drama about the relationship between the first president and his favorite slave, along with the comedy Lemon Meringue Facade.^[4][8]

Lange remained close to Gavin MacLeod, his acting mentor, who was a Palm Springs resident and saw his plays. In a 2014 interview with CBS New York, he said of his long-running friendship with him "Gavin lives in Palm Springs, I'm in LA. So, when I do my plays, he comes down and sees my plays or I'll go see what he's doing!"^[9] Lange also said in a 2017 interview with The Wiseguyz Show: "Oh yeah, sure, Gavin was wonderful. Gavin lives down here in Palm Springs and we're still tight, all of us, Gavin and Bernie and Jill; we still see each other. Fred lives in a different state, we're still close, we're still good friends."^[10]

"Ask Isaac"

Before the American edition of FHM folded in 2006, Lange wrote a sex and advice column, titled "Ask Isaac", with adult film actress Jenna Jameson.^[11]

Celebrity Fit Club

In 2006, Lange appeared in the fourth season of the VH1 reality show Celebrity Fit Club.^[12] He lost 28 pounds during the show's run.^[13]