Fröbe made several appearances in all-star casts in the 1960s, including the films The Longest Day (1962), Those Magnificent Men in their Flying Machines (1965), Is Paris Burning? (1966), and Monte Carlo or Bust (1969). During the 1980s, Fröbe played small parts in Mercedes Benz W123 commercials, helping to promote the coupé and the sedan. Aside from acting, Fröbe was a prolific reciter of lyric poetry, especially that of Christian Morgenstern and Joachim Ringelnatz.