Yesterday President Obama upped his nerdy dad cred considerably when he took Sasha and Malia shopping at a local independent bookstore. They visited Kramerbooks, which is just a few blocks from the White House, as part of small business Saturday, an effort to get people to shop at local businesses after the big box store blowout of Black Friday. After browsing for a bit, the Obamas left with a few books, including The Invention of Hugo Cabret, Diary of a Wimpy Kid: Cabin Fever, and Descent into Chaos: The U.S. and the Disaster in Pakistan, Afghanistan, and Central Asia.