What better gift than a book for your father on Father's Day. And there are plenty of investment and business books to choose from. Here is a sampling. I've read about half of them and heard good things about the other half.
Freakonomics [Revised and Expanded]: A Rogue Economist Explores the Hidden Side of Everything
Richistan: A Journey Through the American Wealth Boom and the Lives of the New Rich
Jim Cramer's Mad Money: Watch TV, Get Rich
The Only Three Questions That Count: Investing by Knowing What Others Don't
Rich Dad, Poor Dad: What the Rich Teach Their Kids About Money--That the Poor and Middle Class Do Not!
The Pre-Foreclosure Property Investor's Kit: How to Make Money Buying Distressed Real Estate -- Before the Public Auction
Options, Futures and Other Derivatives (6th Edition)
SuperCash: The New Hedge Fund Capitalism (Wiley Trading)
If you can't decide which book to give your father, how about Amazon Gift Certificates