I have been a fan of Warren Buffet’s letter to his shareholders for many years. It is clear, concise, honest, often funny, and provides insight into many matters outside of Berkshire Hathaway. The 2006 version is no exception to the rule. You can find it here for your reading pleasure.
You should also check out the full Berkshire Hathaway annual report at: www.berkshirehathaway.com