Most recently seen as Serena's conniving father on Gossip Girl, Billy Baldwin is off to NBC.
The actor will appear on multiple episodes of Parenthood next season, portraying a new love interest for Lauren Graham's Sarah. He'll play Adam's boss.
Throughout its inaugural season, Jason Ritter took on the role of Sarah's teacher boyfriend, but he's been reassigned by the network and will star on The Event this fall.
Parenthood premieres season two on September 21.