Holy cow, suing the IRS for $83.5 million takes balls. Go get em' Google! 

Google Inc. sued the U.S. Internal Revenue Service for an $83.5 million refund, claiming it was improperly denied a deduction for a 2004 stock transaction with America Online Inc. The IRS erred in disallowing a $238.6 million deduction claimed for the difference between the price AOL paid to exercise a warrant for Google stock and the value of the shares, according to the complaint in U.S. Tax Court.