The Office has added another branch to Ed Helms’ increasingly eclectic onscreen family tree.

According to TVLine’s sister site Deadline.com, singer Josh Groban has been cast as — no joke — Andy’s brother.

As we reported earlier this week, 7th Heaven‘s Stephen Collins and E.T.‘s Dee Wallace have been tapped to play Andy’s parents.

http://www.tvline.com/2011/08/office-scoop-josh-groban-andy-brother/