First let me make it clear that I love all the things that Mel Brooks does. I have many of his DVDs, and I have seen the Producers in the West End theatre, and have both versions of the film.
I am just not so sure about turning Young Frankenstein into a musical now showing on Broadway. I hope it is a huge hit but I am just not so sure, as many of the jokes in the original film do not seem to be so suitable for converting to song.
Oh well, I will just have to wait until I get a chance to see it :-)