I'll break the rules because others did...'can't just have one, maybe 5'.
Something that I saw:
-- Angela Lansbury in MAME. The first time I saw this remains my single favorite performance EVER.
-- Colleen Dewhurst and Jason Robards in A Moon For the Misbegotten.
-- Nicholas Nickelby. A once in a lifetime experience.
-- Nathan Lane and Matthew Broderick in The Producers. I know there are people who consider this overrated and feel its relatively short run was appropriate. With Lane as Max B. and that original cast, I NEVER laughed so hard in my life; and Betrayed was one of the great 11:00 numbers ever.
-- Follies in Boston, because it was so unexpected; and I think I ENJOYED 'Boy, Can That Boy Foxtrot' more than 'I'm Still Here'.
Something That I Didn't See:
-- Judy Holiday at the opening of Bells Are Ringing
-- Judy Garland at Carnegie Hall. I listened to the recording about three weeks ago, and still got goosebumps.
-- Opening night of The Philadelphia Story with Kate Hepburn.
-- Don't ask me why, cause I don't know, but the original production of A Majority of One. I would have loved to have seen Gertrude Berg, and the movie is one of my all-time guilty pleasures, despite the incredibly politically incorrect servant.
-- South Pacific with Martin and Pinza.