Wednesday's Brian Teaser

Superhero questions...

(1)  What type of rock makes Superman useless?
(2)  When not a superhero, Spiderman's human name is...
(3)  In the last 30 years, Batman has been played by four different actors.  Can you name three of them?  (Extra credit if you can name all four)
(4)  True or False...Prayer is more powerful than anything a superhero can do.  Can you think of a good website that would help you pray more?

Thanks for playing!