Not so much of musical fan, but plays...

Midsummer Night's Dream is by far my favourite. I've seen it about 5 or 6 times by various companies who set it in various times and locations. I love how it can translate so well...
Honourable mentions go to Passing Places, Waiting for Godot, Slab Boys (laughed my ass off and I rarely do that when I'm in a theatre...), and any Pratchett book performed on stage (but perhaps that's just cause I love Pratchett....? :blink

Also, Shakespeare in any way shape or form...






...so I like plays...