Jump's acting career began when he was 32. Jump participated in a theatre production at the Glendale Centre Theatre in
Glendale, California, where he was noticed and offered an agent. Jump's first break on television was his guest role as Marcus Clements in CBS's
Daniel Boone,
Here Come the Brides, and
Green Acres. In the 1960s, Jump converted to the LDS Church. He acted in several church-produced instructional and educational productions, including
When Thou Art Converted (1967),
Pioneers In Petticoats (1969), In 1967, he played the role of
Lehi in the
Burbank pageant People of the Book
. He appeared as Peter, the apostle, in a 1969 film which was used in some of the church's
temple ceremonies.''
He and Robert Starling, an independent filmmaker, began Associated Latter-day Media Artists. These appearances include
The Love Boat,
Night Court,
The Golden Girls,
Murder, She Wrote, and ''
Who's the Boss?'' He had a recurring role as Maggie Seaver's father on
Growing Pains. On a two part episode of ''
Diff'rent Strokes'' titled "
The Bicycle Man", he played Mr. Horton, the owner of a bicycle shop who attempts to molest series protagonist Arnold Jackson and his friend, Dudley. Koski's fellow roundtable member Donna Bowman disagreed, stating that the special humanized the situation. entitled
The New WKRP in Cincinnati. He appeared in the ninth and final season of
Seinfeld, in which he played
George Costanza's boss at a playground equipment company over two episodes. His last movie role was in the 2004 film
Changing of the Guard, released after his death. == Inspiration and spirituality ==