Just finished reading
<img src="http://ecx.images-amazon.com/images/I/51dlCVwcogL._BO2,204,203,200_PIsitb-sticker-arrow-click,TopRight,35,-76_AA300_SH20_OU02_.jpg" border="0" />
Which is an awesome book. One of the most interesting things I read in it is the infinite sum:
1 + 1/2 + 1/3+ 1/4 + 1/5 + 1/6...
Will eventually surpass ANY number! 10, 100, 1000, 50,000, two hundred thousand million billion etc
Weird but pretty amazing!