Bravo had a show about WDW that showed part of the underground but, for security reasons (I think) only had a few areas highlighted.
I dated a guy that played Goofy a long, long time ago. He told me that character had a height requirement (6'3" +) and it was hotter than hades in that costume. (Anyone that's lived here or been here in the dead of the summer knows).
Not sure if he's innocent or guilty, but he certainly is not getting Disney the kind of publicity that it would prefer.