Watch a sneak peek of THE OFFICE's Season 5 Episode 18, ''New Boss''

Michael (Golden Globe winner Steve Carell) has big plans for his 15th anniversary party at Dunder Mifflin, but is in for a shock when the new, no-nonsense Vice President (guest star Idris Elba) has some ideas of his own. Meanwhile, Jim's (John Krasinski) prank on Dwight (Rainn Wilson) has some unexpected results. Jenna Fischer, Ed Helms, Leslie David Baker, Brian Baumgartner, Kate Flannery, Mindy Kaling, Angela Kinsey, Phyllis Smith, Oscar Nunez, Creed Bratton and Paul Lieberstein also star.

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