Krasinski co-starred as Ethan in a film adaptation of the novel Something Borrowed.
He also signed on to co-star with Drew Barrymore in Big Miracle.
Jon Gries of Lost fame will portray a principal character.
He also directed the third episode of the show's eighth season, titled "Lotto" and the sixth episode of the show's ninth season, titled "The Boat". He is best known for his role as Jim Halpert on NBC's remake of the British hit comedy sitcom The Office.