So far I've seen about 10...
Carousel (1994) - the best - the Best - the BEST I tell you. My favorite childhood memory.
Beauty and the Beast (1994) - a 90s Disney kid's Dream Come True.
Grease (1994) - Rosie O'Donnell played Rizzo. The cast was nice after the show.
Show Boat (1995) - excellent as well, fabulous company
Ragtime (1999) - incredible, moved my mother to tears
42nd Street (2001) - fantastic, just a grand ol' time from start to finish
The Phantom of the Opera (2002?) - mixed feelings - set and costumes were superb of course but there were areas that bored me to death.
Thoroughly Modern Millie (2002 or 2003) - good, I don't recall if I saw it with Sutton Foster or not but the guy that played Jimmy was the understudy
Wicked (saw it twice) - Fun, creative - the book is hilarious at parts
Pippin (2013) - Just wonderful, so glad I was able to see it.