Dr. Octopus is Tevye!
'While filming 'Spider-Man,' I was working with my singing teacher to learn the songs for 'Fiddler.' And one day we were shooting a scene where Doc Ock wakes up on a gurney after tentacle arms have been fused onto him, and I have to scream, and the tentacles are flying, and I'm on wires, coming up like a ghost.
'On the last take, as I was elevated and the tentacles started moving, I sang: ''If I were a rich man ... '
'I think it'll wind up on the DVD.'Via The Yada Blog