Barney uncovers the lost episode of Robin’s “Underneath the Tunes” as Robin Sparkles. Canadian celebrities including Alan Thicke, Jason Priestley, Paul Shaffer, Alex Trebek, K.D. Lang, Steven Page, Geddy Lee and Luc Robataille guest stars as themselves. James Van Der Beek guest stars as Simon, Abby Elliot guest stars as Jeanette, Ted’s newest girlfriend, and Dave Thomas as music agent Chuck Gerusi. Tune in Feb 4th at 8/7c!