Dave Davies

Many people generate an immense amounts of digital data during a single day — often without a second thought. But Stephen Baker, a senior writer at BusinessWeek, warns that the information generated is being monitored by a group of entrepreneurial mathematicians.

In his latest movie, Traitor, Don Cheadle plays a CIA operative who goes undercover to work with a terrorist group — but then becomes a suspected terrorist himself.

The Dark Knight is the most successful film of the summer. Director Christopher Nolan and star Christian Bale can take much of the credit: They've revived a flagging franchise, offering a fresher, darker look at a legend.