Of all shows, Sweeney Todd. Several years ago when the concert version was aired on tv, I watched only a little bit of it before I shut the tv off. "This is CRAZY!" I said. And quite a few years laters, I really got into it.
I guess Assassins too. My friend lent me the cd, and I was like "how on earth could anyone like this musical? it's BORING!" Then I made myself go see the "revival" thinking I was going to be bored out of my mind. But it had a phenominal cast, and it was Studio 54, and I needed to braoden my horizens etc. I absolutely fell in love with the show. It was so clever, yet so entertaining at the same time. Every moment and every song was gripping. I guess it was then that I finally started to "get" Sondheim.
"What a mystery this world. One day you love them and the next day you want to kill them a thousand times over." The Masked Bandit in THE FALL