While the Spider-Man musical hovers in the theater version of production hell alongside the floating head of Bono, another superhero musical has surfaced on the internet: "It's a Bird.. It's a Plane... It's Superman!" All 90 minutes of the 1975 TV special (based on the 1966 Broadway show) are now online.

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As the text at Google Video explains,"This aired once, in the 1970s. It was never rebroadcast. You be the judge of why." Imagine the camp of Adam West's "Batman" crossed with the songs of "Bye Bye Birdie" composers Charles Strouse and Lee Adams. Seriously, they actually wrote the songs, one of which later surfaced as the theme for a Pillsbury biscuit commercial.

Even better: There's a revival of "It's a Bird... It's a Plane... It's Superman!" planned for 2010!

A crucial moment involves Superman singing, "Why must the strongest man in the world be the saddest man, tell me why? Don't they know the strongest man can cry?"

See for yourself, after the jump.