A few questions that I hope will provoke some discussion/mild debates/large-scale arguments/huge flame wars to scorch the very coding of this site.

So.

Are there any sci-fi or fantasy ( or if you prefer, "speculative fiction" ) musicals? Doesn't the concept seem fairly ludicrous? Can you think of any sf/f theater--or for that matter, cinema--that could possibly be taken seriously? There are a few old movies, like 2001: A Space Odyssey. But really, can you think of any made after, say, 1990?

Why do you think sf/f is largely not taken seriously? And why do you think it transfers so poorly to other media, given that so much of the theater's established classics have elements of the fantastic?

And no, A Midsummer Night's Dream is not "fantasy." Actually discuss the failings of the genre; don't try to co-opt other works into it.

EDIT: Chatting with someone about this has made it apparent my question isn't clear. In short, why aren't sf/f plays or musicals written, if the genre is deep? I'd prefer for the discussion to be limited to 20th century works and later, since I foresee anything else deteriorating rapidly into arguments for the inclusion of Homer's Iliad into the corpus of fantasy.