http://news.bbc.co.uk/1/hi/world/americas/us_elections_2008/7675278.stm

....Meanwhile, Barack Obama said he needed to correct some misconceptions about his background.

"I was not born in a manger. I was actually born on Krypton and sent here by my father, Jor-el, to save the Planet Earth," he said, in a reference to Superman.

He also listed his great strength as "my humility" and his greatest weakness as being "a little too awesome"