Actor Kal Penn Leaving White House for TV Role His next gig will be on 'How I Met Your Mother' By John Johnson, Newser Staff Posted Jul 15, 2011 8:49 AM CDT 20 comments Comments Kal Penn in a 2009 file photo. (AP Photo/Chris Pizzello, File) (Newser) – Kal Penn is once again leaving behind his job as a bureaucrat to return to acting. Penn, whose big acting chops include Harold and Kumar and House, will leave his White House post in the Office of Public Engagement for a role on How I Met Your Mother, notes Perez Hilton. We'll see whether it sticks: Penn left his government job last year after 11 months to shoot a movie, only to return, notes the Reliable Source column at the Washington Post. For HIMYM fans: Penn will play a love interest to Robin.