I heard 2 Jackie ad-libs, once when I saw it live in previews, once on someone's pirated video. Live, she said:
"Oh how fun, how LOVELY! It's a wonderful show, isn't it??" Then, 1 second later, to some lady she stepped on: "Oh, honey, I LOVE your FROCK! You look JUST LIKE Ethel Kennedy!" She then asked the woman's husband to give her a leg-up onto the stage. So, he cupped his hands together, gave her a boost and she climbed/rolled onto the stage, ala Carol Burnett.
the second time it was:
"Could 'ya MOVE, please?! Move. Help me out here. It's a matinee....NOBODY CARES."
Both were done with her hilarious wit and both times they had to stop the show for a literally a minute or 2 house erupted into huge laughter and applause for her.
Jackie, honey - you are my GURU! I KNEW she special from the moment I first saw her in the film KISSING JESSICA STEIN a few years ago.
"I am not 'a' Eunice Burns. I am THE Eunice Burns!!!"