A glimpse inside Spider-Man, ‘Broadway’s most expensive musical ever’

"What we didn't realize was how difficult it is to stage this stuff both technically and financially," he told the Associated Press.
After starting the project with co-writer and director Julie Taymor in 2002, 'Turn Off the Dark' was initially held up after the death of a producer. Funding delays, casting, completion of the show's audacious sets and the perfection of its unorthodox aerial stunts all took their toll on the process.
The actors rehearsing, flying around the theater at up to 40 miles per hour and U2's Bono and The Edge working on music.