Marshall and Lily try to figure out how to conceive a baby with the gender of their choice; Robin’s perky new co-anchor irritates her.

When Zoey enrolls in Ted’s class, she manipulates his students into taking her side in the fight to save the building being torn down to make room for his project….

When Ted and Barney argue about who has “dibs” on a hot girl, Ted realizes that she is there with Cindy, a girl he previously dated who is also the…

When Barney convinces the gang to help his mom move out of her home, they quickly learn that she has been very protective of Barney and lied to him about…

Barney uses his best womanizing tactics to try to convince Ted to design the new GNB building; Robin drunk dials Don.

Ted is conflicted when Victoria approaches him on her wedding day and asks him to elope. Meanwhile, Barney and Quinn are arrested by airport security while on the way to…

Lily asks for her father’s help when she and Marshall decide to throw a housewarming party. Marshall’s boss gets under Ted’s skin and the two nearly come to blows, and…

Lily and Marshall invite Robin and Kevin on a Valentine’s Day trip to Vermont. Kevin and Robin use the trip to talk about taking their relationship to the next level….

When Robin breaks up with Kevin, Ted confesses his feelings to her. Meanwhile, Barney is on a mission to find something private of Marshall and Lily’s.

Barney continues his pursuit of Quinn. Ted has to deal with Robin’s old room, while Robin gets a taste of suburban life from Marshall and Lily.

The gang tries to break up Barney and Quinn after learning they plan on moving in together, leaving Robin and Ted to fight over who deserves to sublet her apartment.

Ted, Marshall and Barney embark on another “trilogy time”, where they get together every three years to watch the “Star Wars” trilogy and envision what their lives will be like…

Although Ted is happy with living alone at his new apartment, Barney tries to convince him about going out every night. Lily has a naughty dream about someone other than…

Marshall panics when a baby shower indicates that the birth is close at hand and accidentally takes a road trip with Barney. Ted hallucinates seeing Robin while trying to get…

Lily and Marshall officially move to the suburbs and realize that Lily’s bossy father refuses to move out of their house. Meanwhile, the gang adjusts to them moving by going…

Ted finally meets his mystery girl in the Slutty Pumpkin costume. Meanwhile, Barney learns he is part Canadian, and Lily has pregnancy brain.

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…

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.

Ted ponders how being in the right place at the right time can impact a person’s life; Barney celebrates his 200th female conquest.

Barney and Robin are afraid to break the news to Nora and Kevin that they cheated with each other and want to get back together, while Ted and Marshall get…

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…

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…

Ted and Barney discuss making a life-changing decision together, and Robin tries to discourage Marshall and Lily from moving to Long Island.

Robin receives bad news and decides to hide it from the gang. Marshall hangs Christmas decorations in his house in the suburbs with some help from his neighbor.

After celebrating New Year’s Eve, Marshall visits his father’s graveside to carry on their tradition of tailgating. Meanwhile, Barney and Ted open a bar called “Puzzles,” and Robin is forced…

Marshall decides to step in after seeing his boss’s approach to settling with a million dollar company. Ted’s class trip isn’t what he envisioned.

When Ted goes on a date without researching the girl on the Internet, the gang interferes, showing Kevin that they are too into each other’s business. Meanwhile, Lily and Marshall…

Marshall and Barney lie to keep Ted from finding out the headquarters he’d been hired to design for GNB has been cancelled.

The gang begins to realize their romantic partner reminds them of one of their parents. Meanwhile, Barney and Nora’s planned romantic evening is ruined by a string of bad events.

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…

Robin, desperate to find a job before she is deported, agrees to let Barney produce a video resume for her.

Barney faces having to wear Marshall’s ducky tie if he loses a bet with him. Meanwhile, Ted hopes to apologize to an ex for cheating on her.

After Robin assaults a girl who is out to ruin Barney’s relationship, she is forced to begin court-mandated therapy sessions. Meanwhile, Ted gets too involved in Lily’s pregnancy.

The gang thinks that Barney must have a secret girlfriend after noticing his bizarre behavior.

Marshall and Lily are less than thrilled when they hear that Ted’s college girlfriend (Laura Prepon) has moved to New York.

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.

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.

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,…

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…

While Barney prepares for his wedding to a mystery bride, he and Ted reminisce about Punchy’s wedding, including when Marshall and Lily announced they are having a baby. Meanwhile, Robin…