Real World article(written from a Production point of view)
Don "Donny" Most (born 8 August 1953; age 64) is the actor who portrayed Doctor Kadan in the Star Trek: Voyager episodes "Workforce" and "Workforce, Part II".
He is best known for playing Ralph Malph from 1974 until 1980 (and again for two episodes in 1984) in Happy Days, co-starring Anson Williams and Gavan O'Herlihy.
In 2008 he appeared in the drama Finding Madison alongside Eric Steinberg. Kyla Kuhner provided the still photography for this film.