there was a Gabe Kaplan production called Groucho in the early 80's - I think it was on HBO or something, where he just did a sort of imprompto bio of Groucho, including some of the old jokes, humor, and some cameos with Chico and Harpo.

At one point he says "Then we did the film A Day At the Races - and even though we all had read the script, and all knew how it was going to turn out, Harpo still bet on the wrong horse"

some days, I think that's about right - Knew the script, know the ending, but still bet on the wrong horse.

rb