Tim Cook's taking on the tax man. On Tuesday, the Apple CEO will appear before the U.S. Senate's permanent Subcommittee on Investigations to discuss that body's look into multinational companies and how they pay taxes. As a special preview to those who really can't wait to hang on Cook's every word, Apple on Monday released its head honcho's testimony.Related StoriesFire Tim Cook? You're cuckoo bananasApple CEO to face Senate in tax grilling
