'How I Met Your Mother': John Lithgow is Barney's dad
Co-star Cobie Smulders broke the news in an interview on the TV Guide Network, saying "It's really exciting and different for our show. He's such a pioneer."
The character actor has had quite a run, and after his brilliantly psychotic turn on "Dexter," it will be nice to see him tackle something with a little more whimsy.
And a dad isn't the only new person in Barney's life. TVLine reports former "General Hospital" actress Nazanin Boniadi gets a multi-episode arc later this season as his new love interest -- not the best news for those of you still hoping for a Barney/Robin reunion this season.