S8, E15: 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.
Abby Elliott
Corey Krueger
Craig Lee Thomas
Alan Thicke
James Van Der Beek
Paul Shaffer
Jason Priestley
Alex Trebek
k.d. lang
Steven Page
Geddy Lee
