Barney uncovers the lost episode of Robin’s “Underneath the Tunes” as Robin Sparkles. Meanwhile, Marshall and Lily are concerned that Ted’s new girlfriend is a stalker.
Quest roles:
James Van Der Beek(Simon Tremblay), Alan Thicke(Alan Thicke), Alex Trebek(Alex Trebek), Abby Elliott(Jeanette Peterson), Paul Shaffer(Paul Shaffer), Dave Thomas(Chuck Gerussi), Jason Priestley(Jason Priestley), Geddy Lee(Geddy Lee), Dave Coulier(Dave Coulier), Steven Page(Steven Page), Luc Robitaille(Luc Robitaille)