The Office Season 8 Episode 18 : New Boss (05x18) is about Michael's 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 prank on Dwight has some unexpected results.

Watch The Office: New Boss tonight March 19, 2009.