Some day Broadway will be a big collection of theatres with movie adaptations. But thats okay, because everything is practically an adaptation of something, be it a book or a play or someones life...
Les Mis, Phantom, Cats, Miss Saigon, Wicked, Hello Dolly, West Side, Fiddler, Oklahoma, Carousel, Rent, Hairspray, Ragtime, Seussical, Mame, Gypsy, All Shook Up, Oliver, My Fair Lady, Evita, Sunset Boulevard, Superstar, Joseph, Funny Girl....the list goes on and on. Even Mamma Mia's central plot is taken from some obscure movie, I think.
Movies are our new media of choice - of course tons of adaptations are going to spring up. The good ones will last and the bad ones will die horribly, most of the time at least.:)
I, too, feel weird about the Legally Blonde idea. Whats next, American Pie?
There's always room for pathos - and jazz hands.