I've already written about my experience with the American Shakespeare's production which is probably why I haven't seen any production of it since.
I looked up the New York Time's review of the film when it opened at Radio City and it is quite the rave. If you want to read it yourself you...
Back in the 70s I saw Fred Gwynne as the stage manager in a production at the American Shakespeare festival in CT. It was certainly one of the greatest theatrical productions I have ever seen. I wish I could find a cast list. I believe Geraldine Fitzgerald was in it. Perhaps even Theresa Wright...