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Season Premiere

How I Met Your Mother: Season 4

4x01 Do I Know You?
TV-14

Episode

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Aired2008-09-23T00:00:00Z on CBS
Runtime23m
DirectorPamela Fryman

WritersCarter Bays + 1 more, Craig Thomas
CountryUnited States
LanguagesEnglish
GenresComedy

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Ted and Stella get engaged, but Ted soon learns that he doesn't know anything about her. Meanwhile, Barney confesses to Lily that he's in love with Robin.

Private Notes

Actors
All Cast & Crew

Season Regulars
5

Guest Stars
5

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Ads suck, but they help pay the bills. Hide ads with

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Season Premiere

How I Met Your Mother: Season 4

4x01 Do I Know You?
TV-14

Actors
All Cast & Crew

Season Regulars
5

Guest Stars
5

Josh Radnor

Ted Mosby

Neil Patrick Harris

Barney Stinson

Jason Segel

Marshall Eriksen

Alyson Hannigan

Lily Aldrin

Cobie Smulders

Robin Scherbatsky

Sarah Chalke

Stella Zinman

Kyle Archer

Mark Johnson

Heidi Herschbach

April

Lyndsy Fonseca

Daughter

David Henrie

Son

Find a TV show or movie

Season Premiere

How I Met Your Mother: Season 4

4x01 Do I Know You?TV-14

ActorsAll Cast & Crew

Season Regulars 5

Guest Stars 5

Josh Radnor

Ted Mosby

Neil Patrick Harris

Barney Stinson

Jason Segel

Marshall Eriksen

Alyson Hannigan

Lily Aldrin

Cobie Smulders

Robin Scherbatsky

Sarah Chalke

Stella Zinman

Kyle Archer

Mark Johnson

Heidi Herschbach

April

Lyndsy Fonseca

Daughter

David Henrie

Son

Find a TV show or movie

4x01 Do I Know You?
TV-14

Actors
All Cast & Crew

Season Regulars
5

Guest Stars
5