did donny most sing on happy days
Donny Most. Donny Most is best known for his role as Ralph in the long running television series âHappy Daysâ. During this time, he worked with such emerging talents as Ron Howard and Garry Marshall. Recently, Don was seen in a recurring role on the hit TV show â âGleeâ, as well as a starring role in the indie film â âThe Yanklesâ.