“The Perfect Week” – When Barney is about to complete the perfect week – landing seven different girls in seven days – the gang roots him on in order to forget about their own miserable week, on HOW I MET YOUR MOTHER, Monday, Feb. 1 (8:00-8:30 PM, ET/PT) on the CBS Television Network. CBS Sports Broadcaster Jim Nantz and 2009 World Champion New York Yankee Nick Swisher guest star as themselves.