Josh Radnor Ted Mosby Actor Jason Segel Marshall Erikson Actor Neil Patrick Harris Barney Stinson Actor Alyson Hannigan Lily Aldrin Actor Cobie Smulders Robin Sherbatsky Actor Bob Saget Narrator Abby Elliott Jeanette Peterson Guest Star Corey Krueger Gordie Guest Star Craig Lee Thomas Turk Grimsby Guest Star Alan Thicke Alan Thicke Guest Star James Van Der Beek Simon Tremblay Guest Star Paul Shaffer Paul Shaffer Guest Star Jason Priestley Jason Priestley Guest Star Alex Trebek Alex Trebek Guest Star k.d. lang k.d. lang Guest Star Steven Page Steven Page Guest Star Geddy Lee Geddy Lee Guest Star Luc Robitaille Luc Robitaille Guest Star Dave Thomas Chuck Gerussi Guest Star Chuck Lacey Old Man Guest Star Carter Bays Executive Producer, Writer Craig Thomas Executive Producer, Writer Pamela Fryman Director