Strange but True: Infinity Comes in Different Sizes: Scientific American
http://www.sciam.com/article.cfm?articleID=DFCF15E5-E7F2-99DF-3EAAFAF2776CEFC5&chanID=sa029
"If you were counting on infinity being absolute, your number's up"
Polymathematics: No, I'm Sorry, It Does.
http://polymathematics.typepad.com/polymath/2006/06/no_im_sorry_it_.html
"Okay, so there's my rant. .9 repeating equals one. No, I'm sorry, it does."