I saw it on Broadway two years ago when I was visiting NYC. I absolutely loved it too especially with the flying effect they did with the DeLorean at the very end. Although I heard they don't do this effect on tour.

There was a funny production error that occurred in the middle of the show when Marty first visited Doc's house in 1955. When they transitioned over from the outside of the house to inside of the house, the entire left half of the set (inside of the house) was completely missing. Casey Likes who played Marty ad-libbed and said "Hey Doc, uhhhh isn't something missing?" A few awkward silent seconds passed as we all were trying to figure out what he meant by that before the left half of the set piece finally rolled in from stage right. The entire crowd busted into laughter with Roger Bart (who played Doc) making the comment towards stage right production "The check's in the mail".