Robin de Jesus
Honestly there are several; Follies, Merrily We Roll Along and even though I saw it 5 times, Caroline or Change. Caroline changed my life.
Levi Kreis
The original production of The Who's Tommy
Kristen Johnston Carrie: The Musical. Any show that has a song where a bunch of women throw tampons at someone, while singing "plug it up!"...that's my kind of show. Seriously, I'd love to have seen Colleen Dewhurst in Moon for the Misbegotten or Tallulah in Skin of Our Teeth.