Donny Most will forever be associated with his role as loudmouth Ralph Malph on "Happy Days," despite his efforts to build a more varied resume. The Brooklyn-born Most dropped out of Lehigh University, moved to Hollywood at age 20, and immediately found a guest role on "Emergency!," before landing "Happy Days" in 1974. The show, capitalizing on the 1970s trend for 1950s nostalgia, became a ratings success and ran for a decade. Once "Happy Days" ended, a spinoff with Ralph and Potsie (Anson Williams) never materialized, and Most was thrown into typecasting purgatory. The redheaded actor had already, perhaps inevitably, played Huckleberry Finn in a TV movie and guest starred several times on "The Love Boat," and found himself able to land only voice work in animation. As Ralph the Mouth receded into the background in the 1990s and 2000s, Most found more work as an actor, including a supporting role in "EdTV," directed by his "Happy Days" co-star Ron Howard. He has also directed two independent feature films, "The Last Best Sunday" (1999) and "Moola" (2007).