I met Carole Shelley after seeing a Joe Orton play she was starring in at MTC. I was on a date with a guy who knew her quite well, and he needed to say hello because she knew he was there. (This was still the '80's, so no email to communicate or adjust plans.) She stepped out into the lobby clearly looking for David, and ran over to him bursting with gossip. Before she spoke too much, David introduced me, she was very nice and asked if I'm safe to tell her gossip in front of. (Since this was long before the net, who was I going to tell, and it was something that was going to be in the papers in a few days anyway, she just knew it before anybody and David could keep a secret like nobody's business.) They said just keep it quiet until the story breaks.
I can't even remember what it was. But she was a delight to meet. In this internet era, she'd have had to be more careful who she said the days-in-advance info around. There were other people in the lobby area, including some who came up to her for autographs.