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 Nazanin Boniadi Nora Guest Star Kal Penn Kevin Guest Star Ellen D. Williams Patrice Guest Star Vicki Lewis Dr. Sonya Guest Star Alexis Denisof Sandy Rivers Guest Star Erica Handley waitress Guest Star Tenille Houston Plastic Surgery Woman Guest Star Hollie Winnard Infomercial Actress Guest Star Jeff Probst Jeff Probst Guest Star Michelle Díaz Haley Guest Star Katherine Von Till Darcy Guest Star Tami Sagher Paula Guest Star Tarah Paige Kersten Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer Kourtney Kang Writer Pamela Fryman Director