For me, it depends on the musical. I loved Spamalot -- it was silly, but it was supposed to be (Holy Grail itself is silly - "Sir Robin ran away! Bravely ran away, away!" ). I love the classics too -- Les Mis, Fiddler, etc. Of the newer ones, some are good (Lion King), some are not (Billy Elliot, American Idiot). I enjoy going out to see them though.