Josh Radnor Ted Mosby Actor Jason Segel Marshall Erikson Actor Alyson Hannigan Lily Aldrin Actor Neil Patrick Harris Barney Stinson Actor Cobie Smulders Robin Sherbatsky Actor Bob Saget Narrator Bill Fagerbakke Marvin Eriksen Sr. Guest Star Lyndsy Fonseca Daughter Guest Star David Henrie Son Guest Star Rachel Bilson Cindy Guest Star Kaylee Defer Casey Guest Star Peter Katona Co-Worker 1 Guest Star Brian David Jones Co-Worker 2 Guest Star James Ryen Co-Worker 3 Guest Star Daniel Kash Guy Guest Star Lou George Bob Guest Star Carter Bays Executive Producer, Writer Craig Thomas Executive Producer, Writer Pamela Fryman Director