Here, not quite following the script at the 1968 Tony Awards, is the one, the only…Groucho!
In case you're curious: This ceremony was telecast on April 21, 1968 from the Shubert Theatre on 44th Street in New York. Minnie's Boys, the musical about the Marx Brothers, didn't open until late March of 1970 so Groucho wasn't in Manhattan to work on it. Thanks to Shelly Goldstein for suggesting this clip to me…