John Waters at August Osage County--during intermission grew a set and went up and said hello and how much of a fan I was. He smiled and thanked me and I hightailed in back inside.
Rosie Perez down the row from me at No Child.
Billy Porter, dressed like a naughty schoolboy, at Buyer and Cellar.
Darren Criss at How to Succeed several months before he went into the show.
Tyra Banks at In The Heights.
Patricia Heaton and her bitchface at The Little Dog Laughed (she was there with Project Runway alum Laura Bennett and their respective husbands).
Mario Cantone at The Women.
Probably many more I can't remember...