one night at second city during the late 1980s, mckenna received the acting-job offer which would change his life. steve smith was recruiting cast members, especially a sidekick, for his new project, "the red green show". he had come to second city and was scoping out the entire troupe, but when patrick did his twitchy-nerd character, smith knew he had his sidekick. he approached mckenna after the show, and he accepted the part. this twitchy nerd character would be seen on television screens throughout canada and the us for the next 15 years as the lovable nephew harold green on "the red green show".