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Sandcastles in the Sand is the sixteenth episode of the third season of How I Met Your Mother, and the sixtieth episode overall.
Josh Radnor (Ted Mosby),
Jason Segel (Marshall Eriksen),
Cobie Smulders (Robin Scherbatsky)
Neil Patrick Harris (Barney Stinson)
Alyson Hannigan (Lily Aldrin)
Special Guest Star:
James Van Der Beek (Simon)
Ryan Michelle Bathe (Michelle),
Alan Thicke (Mr. Scherbatsky),
Tiffany (Catholic School Girl),
Chris Romano (Punchy),
Lyndsy Fonseca (Daughter),
David Henrie (Son)
Veronica Estrada (Catholic School Girl),
Cara-Lee Knodel (Catholic School Girl)
An old flame from Robin's teenybopper days has her reliving the past...until Barney steps in.
Behind the Scenes
Allusions and References