Blanc's work on Benny's show was classic. He played just about every on-off role needed on the show. His two most famous recurring parts were of Jack's long-suffering violin teacher, who never seemed to be able to get Jack to pay for his lessons, and on several Christmas season shows, a store clerk working the gift wrapping counter. Jack could never decide on exactly the right gift for announcer Don Wilson, and kept changing his mind, but not until after Mel's character had already wrapped it. Oh, and of course, he also provided the sound effects whenever Benny started up his Maxwell.