For ten years he was a writer and performer in the influential stage revueSpring Thaw. From 1973 to 1993 he was a member of the radio version of the Royal Canadian Air Farce. He retired from regular performing when the troupe moved to television, although he continued to appear on the show as an occasional guest star, including the TV series finale.
In addition to stand-up routines in the traditional format, Broadfoot creates routines based around a number of recurring characters including, most notably:
Big Bobby Clobber, a professional hockey player who seemed to have taken a few too many hits or else was not very sharp to begin with.
Broadfoot also starred in the short-run sitcom XPM. He has received several ACTRA and Juno awards and is an Officer of the Order of Canada. He is the author of an autobiography, Old Enough to Say What I Want (ISBN 0-7710-1657-3). He retired in 2005.