Though he is also known for his appearances in several 1980s Bell Canada commercials and for his television roles in Here's Duffy, Accidental Family, and other series, Mann is perhaps best remembered for voicing Yukon Cornelius in the 1964 television special Rudolph the Red-Nosed Reindeer. Before making his first television appearance in the 1954 CBC series Ad and Lib, Mann worked as a DJ for a Toronto radio station.
