From NBC's official press release.

Michael (Golden Globe winner Steve Carell) and Dwight (Rainn Wilson) go undercover to do a bit of industrial espionage on a paper company competitor.  Meanwhile, the rest of the office holds a debate to settle the question: is Hilary Swank hot? on The Office, Thursday, January 22, 9pm on NBC.

The Office stars John Krasinski, Jenna Fischer, B.j. Novak, Melora Hardin, Leslie David Baker, Phyllis Smith, Steve Carell, Brian Baumgartner, Kate Flannery, Angela Kinsey, Oscar Nunez, Rainn Wilson, Ed Helms, Paul Liberstein, and Mindy Kaling.

Source: NBC
(Image Courtesy of NBC)