Robin becomes increasingly suspicious of Barney's relationship with Patrice. Meanwhile Marshall discovers his mother is moving on in her romantic life… with a very disturbing partner.

Marshall and Lily discover their trouble finding a nanny is a result of one of Barney's schemes; Ted and Robin argue over whose relationship is more serious.

Lily goes into labor while Marshall and Barney are in Atlantic City; Robin and Ted try to distract Lily from her labor pains.

The gang recognizes similarities between their significant other and their parents; a string of unfortunate events ruin Nora and Barney's evening of romance.

When Marshall and Lily officially move into their house in the suburbs, Lily's father refuses to move out; the gang visits a strip club.

Lily and Marshall throw a housewarming party, during which Ted nearly comes to blows with Marshall's boss; Barney hits on a crazy divorcee.

Marshall goes to his father's grave for New Year's Day tailgating; Barney and Ted open a bar; Robin fills in for a news anchor.

While on a trip to Minnesota, Ted and Barney try anything to make Marshall laugh; Marshall runs into an old nemesis from high school.

Marshall bequeaths a "slap bet" slap to Ted and Robin; Lily's estranged father (Chris Elliott) visits for Thanksgiving.

Marshall asks Barney and Ted for help figuring out where Lily went in the middle of the night during their argument.

Dana and Jim both covet their reverend - she for romance, he for the pastor's prowess at bowling.

Eddie wants to join the football team, despite Jessica forbidding him to try out; Emery learns Evan will be in middle school with him; Louis battles with Kenny Roger's right-hand man over changes at the steakhouse.

Still homeless, the Huangs move in with Honey and Marvin; Jessica gets a chance to compete on "Wheel of Fortune"; Eddie starts high school; Michael Bolton offers Louis some help.

Tandy devises an escape plan to get away from Pamela and back to the others; the rest of the gang encounters a castaway who has been stranded on an island for years.

Pamela tries to redeem herself with everyone; the gang finally reaches Mexico; Todd is disappointed that Zihuatanejo is not the paradise he dreamed of.

Jim feels guilty after cheating at a church's fund-raising bingo game.

Jim's new pastor harbors a grudge against him over a childhood game of dodgeball. Chris Elliott guest stars.