9:00am PT by Lesley Goldberg
'Parenthood': Watch Jason Ritter's Awkward Return (Exclusive Video)
Jason Ritter returns to NBC's Parenthood during Thursday's winter finale — and it's likely to be pretty awkward for everyone.
Hank (Ray Romano), Sarah (Lauren Graham) and Sandy (Betsy Brandt) settle in for Ruby's school play and sit down to quite surprise: Mark Cyr (Ritter) filling in for the drama teacher.
Diehard Braverman fans remember that Mark was last seen in season four after he broke off his engagement to Sarah. He made a brief return in season five when Amber (Mae Whitman) runs into Mark on the street and Sarah learns that he's engaged.
Check out the clip, below, to see just how awkward Mark's return is for everyone.
Parenthood's final season continues Thursdays at 10 p.m. on NBC.