Admit it, you smiled when you first heard about Spider-Man: The Musical or Spamalot, whether you ever saw those shows or not. They are far from the strangest subjects for musical stage productions. How about Octomom! The Musical, or Jerry Springer: The Opera? None of them are as weird as Triassic Parq:
A phony Morgan Freeman narrates the dramatic story of a Tyrannosaur sex-change. I am not kidding one bit about this. This parody of Jurassic Park is told from the perspective of some genetically-revived dinos dwelling on a tropical island who hail the local laboratory as their deity. Live actors in colorful clothing bring these singing saurians to life.
Read about 12 such weird musical productions at mental_floss, where they're celebrating 12/12/12 with many lists of twelve things on a variety of subjects. Link