I have and I will continue to! Musicals have amazing wordplay, and many of my favorite songs come from them (Sondheim! Rogers & Hammerstein!). Plus, they span such a wide variety of genres - there's something for everyone!
Totally, I'd kill to see Repo! The Genetic Opera or Rocky Horror Picture Show live.
The Rocky Horror Show is one of the ones I REALLY want to go see. A friend of mine goes anytime someone's putting it on close. I've always been too nervous to go. I don't want to get pulled up on the stage for all the virgin activities. ahahah