I'm another one who saw the original production. Embarrassingly bad, though with one or two decent songs, as I recall. At one point, I thought I'd accidentally stumbled into a Chippendale's show. Kilmer can sing acceptably, but the songs are mostly, to say the least, thin and uninspired, and the choreography at times is just plain silly.
I later decided I had to buy a copy (used) of the DVD, just so when I tell people how bad this show was, I'll have proof. When watching the DVD, take note of the unenthusiastic, "polite" applause. And I'm figuring it was probably a conscious choice not to show the audience.
My wife wasn't able to join the rest of us to see the show, so I bought her a souvenir t-shirt, telling her that she got the better deal.