stephen colbert the office gi 'The Office': Stephen Colbert will stir up Treble, er, troubleOne of Ed Helms‘ former “Daily Show” cohorts will make a guest appearance on “The Office” this fall.

No, not Steve Carell. “The Colbert Report” host Stephen Colbert will guest-star in the Oct. 25 episode, EW reports.

Colbert will be playing the oft-mentioned but previously unseen Broccoli Rob, a member of Andy’s (Helms) college a cappella group Here Comes Treble.

Andy will learn that Rob has been telling a different story about the group’s history, which will almost certainly put Andy’s anger-management training to the test.

EW also describes Broccoli Rob as “smarmy [and] competitive,” which seems like it should be right in Colbert’s wheelhouse.

“The Office” begins its final season at 9 p.m. ET Thursday (Sept. 20) on NBC.

Posted by:Rick Porter