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Episodes
Cast
Josh Radnor
Ted Mosby
Neil Patrick Harris
Barney Stinson
Jason Segel
Marshall Eriksen
Alyson Hannigan
Lily Aldrin
Cobie Smulders
Robin Scherbatsky
Cristin Milioti
Tracy McConnell
1Do I Know You?
Sep 22, 200823 min
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.
2The Best Burger in New York
Sep 29, 200823 min
Marshall claims that he had the best hamburger in the world during his first week in New York City, but he forgot where the burger joint is located. The gang then hits the streets of Manhattan to help him find it.
3I Heart NJ
Oct 6, 200823 min
When Stella's babysitter cancels, a night out turns into the gang hanging out at her place, and Ted talks up New Jersey... until he learns Stella wants him to move there after marriage.
4Intervention
Oct 13, 200823 min
When Ted is packing his stuff for his move to New Jersey, he discovers that the gang was going to hold an intervention for his engagement to Stella and demands they hold it anyway.
5Shelter Island
Oct 20, 200823 min
Ted and Stella move up their wedding date, but the wedding may not go off as planned after Ted breaks the "No Exes Rule" and invites Robin to come in from Japan for the wedding.
6Happily Ever After
Nov 3, 200821 min
A serendipitous meeting with someone from his past has Ted thinking about how he would handle running into someone he would prefer to forget.
7Not a Father's Day
Nov 10, 200823 min
Barney creates a holiday to celebrate not being a father. Meanwhile, Lily and Marshall are considering having a baby, but Lily first wants advice from Ted and Robin.
8Woooo!
Nov 17, 200823 min
A birthday party for one of Lily's co-workers leads to Robin connecting with a group of single partiers known as the "Woo Girls". Ted presents a plan for Goliath National Bank's new HQ.
9The Naked Man
Nov 24, 200821 min
The gang learns a new way to get their dates to sleep with them after Ted walks in on Robin's date sitting naked on the couch.
10The Fight
Dec 8, 200821 min
Ted (to prove he's not a milquetoast) and Barney (to impress Robin) pick a fight with a group of guys sitting in the gang's favorite booth at MacLaren's.
11Little Minnesota
Dec 15, 200821 min
Ted tries to keep his irresponsible sister from hooking up with Barney during her trip to New York, and Robin starts hanging out with Marshall at a bar for Minnesotans, not telling them that she's really Canadian.
12Benefits
Jan 12, 200921 min
Ted and Robin discover that sex with each other solve their fights as roommates, which makes Barney very jealous and angry. Meanwhile, Marshall reveals that he's too embarrassed to use the office bathroom.
13Three Days of Snow
Jan 19, 200923 min
Lily and Marshall try to continue their airport reunion tradition. Barney and Ted offer to keep MacLaren's open during a blizzard so they can meet up with some college girls.
14The Possimpible
Feb 2, 200921 min
Robin, desperate to find a job before she is deported, agrees to let Barney produce a video resume for her.
15The Stinsons
Mar 2, 200923 min
The gang thinks that Barney must have a secret girlfriend after noticing his bizarre behavior.
16Sorry, Bro
Mar 9, 200923 min
Marshall and Lily are less than thrilled when they hear that Ted's college girlfriend (Laura Prepon) has moved to New York.
17The Front Porch
Mar 16, 200923 min
Ted learns that not only did Lily plant another woman's earring in his bed for Karen to find, she has meddled in some of his other relationships as well.
18Old King Clancy
Mar 23, 200921 min
Marshall and Barney lie to keep Ted from finding out the headquarters he'd been hired to design for GNB has been cancelled.
19Murtaugh
Mar 30, 200921 min
When Barney learns Ted has a list of things he thinks the gang is too old to do, he sets out to do every task within 24 hours in order to prove Ted wrong.
20Mosbius Designs
Apr 13, 200922 min
Ted goes out on his own as an architect and hires an intern to help get things started, but the intern gets a little too close to others in the gang.
21The Three Days Rule
Apr 27, 200923 min
Ted breaks one of Barney and Marshall's relationship rules, texting a woman he recently met, so the pair play a joke on Ted by pretending to be the woman.
22Right Place, Right Time
May 4, 200921 min
Ted ponders how being in the right place at the right time can impact a person's life; Barney celebrates his 200th female conquest.
23As Fast as She Can
May 11, 200923 min
Ted is trying to find a new job, and when an old acquaintance tries to help nothing goes as planned. Barney tries to smooth talk his way out of a ticket.
24The Leap
May 18, 200923 min
Ted is trying to keep his architecture firm afloat by doing an all-nighter, but Marshall tries to lure him to the roof for a surprise 31st birthday party, on the fourth season finale.