Watch How I Met Your Mother Season 6 Episode 24: Challenge Accepted

How I Met Your Mother Season 6 Episode 24 – “Challenge Accepted” Air date: Monday May 16th 2011 at 08.00 pm on CBS Television Network Short Summary: Barney and Robin reconnect when meddling in Ted’s relationship while he’s busy being a best man. Meanwhile, Lily and Marshall nervously await his expected case of food poisoning. […]