Bitenc best known roles are in "Island of the Amazons" (1960), "Apache Gold" (1963), "Target for Killing" (1966), "The Seventh Continent" (1966), "Poppea's Hot Nights" (1969), "The Ravine" (1969), "Private Vices, Public Pleasures" (1976), "Cross of Iron" (1977), "The Secret of Nikola Tesla" (1980), "War and Remembrance" (1988), "Outsider" (1997) and in "Long Dark Night" (2004).