Duet

The Office Episode: St. Patrick's Day Season 6, Episode 19 Air Date: March 11, 2010 Steve Carell (Michael Scott) and cast FRAME GRAB CR: NBC; HOW I MET YOUR MOTHER "No Tomorrow" L-R:Vanessa Minnillo, Josh Radnor, Neil Patrick Harris, Brian Letscher CR: CLIFF LIPSON/CBS

Jack Rowand/The CW