John Lithgow to Play Neil Patrick Harris' Dad on 'How I Met Your Mother'
The episode will air at the end of February.
It's official: John Lithgow will play Barney Stinson's (Neil Patrick Harris) dad on How I Met Your Mother, co-star Cobie Smulders confirms.
Smulders, who plays Robin in the CBS sitcom, joked on TV Guide Network's Hollywood 411 that she was terrified of Lithgow after his turn as a serial killer on Dexter.
Still, she says "it's really exciting and different for our show. He's such a pioneer."
CBS confirms the episode will air around the end of February.