Listed are Tony Award winning musicals since 1980. Some are great, and others just happen to be what was considered the best of what was available to choose from that year.
http://www.ranker.com/list/best-tony-award-winning-musical-since-1980/lanayoshii,
Les Misérables
Avenue Q
Cats
Evita
Rent
Spamalot
The Producers
Sunset Boulevard
42nd Street
The Lion King