Chris Evans as Narrator

Michelle Monaghan as Her

Topher Grace as Scott

Aubrey Plaza as Mallory

Luke Wilson as Samson

Martin Starr as Lyle

Anthony Mackie as Bryan

Ioan Gruffudd as Stuffy

Philip Baker Hall as Granddad

Patrick Warburton as Dick

Ashley Tisdale as Ashley Tisdale

Matthew Morrison as Matthew Morrison

Jaeden Martell as 6 Year Old Me

Fabianne Therese as College Girl

Gerry Bednob as Cabbie / Gabriel

Beverly D'Angelo as Lyle's Girlfriend

Kyle Mooney as Other Dude

Scott Evans as Blissful Boy

Brenda Schmid as Blissful Girl

Sarah Dumont as Cute Girl

Mikaela Hoover as Lacey

Devon Ogden as Sadie