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 David Henrie Son Guest Star Lyndsy Fonseca Daughter Guest Star Sarah Chalke Stella Zinman Guest Star Kyle Archer Mark Johnson Guest Star Nicole Taylor Sexy Blonde Guest Star Camila Greenberg Jessica Guest Star Heidi Lynne Herschbach April Guest Star Alonza Maxwell Bartender Guest Star Carter Bays Executive Producer, Writer Craig Thomas Executive Producer, Writer Pamela Fryman Director