->''"Sarah, your suspension from lacrosse for excessive force has been lifted, so you're going today... Henry, you have band practice, all right? I cleaned your clarinet. Please don't play with your food in your mouth again. Kim and Jessica, your teacher called and has made a request that you do not correct her in front of the class. Mike, you have show-and-tell today. And please, honey, remember that body parts do not count. Kyle and Nigel, you have a dentist appointment at 3:00, so you're going to work with Dad."''
-->-- Kate Baker (bear in mind this covers barely half the kids)

2003 film starring SteveMartin about him, his wife and their twelve kids. Count 'em, ''twelve''.

VeryLooselyBasedOnATrueStory, in that there was a book & FilmOfTheBook in TheFifties also called ''Cheaper By The Dozen'' which had a family with twelve kids in it. The [[Literature/CheaperByTheDozen original book]] is set in the 1920s and was written by Frank Gilbreth Jr. and Ernestine Gilbreth Carey. That's the only similarity. The Gilbreth children were: Anne, Mary (1906-1912), Ernestine, Martha, Frank Jr., William, Lillian, Frederick, Daniel, John, Robert and Jane. The authors wrote a sequel called ''Belles on Their Toes'' which follows the family after [[spoiler: Frank Gilbreth, Sr's death]]. Mrs. Lillian Gilbreth (the mother) served as an adviser to five American presidents (Hoover, Roosevelt, Eisenhower, Kennedy & Johnson); she and her husband are part of a permanent exhibit at the Smithsonian Institution. As of July 2010, Frederick is the last surviving sibling of the original twelve.

Plotwise, the family packs up and moves an unspecified distance from a small town into the suburbs of Chicago so the Dad can pick up his dream job coaching his old college [[UsefulNotes/AmericanFootball football]] team. The kids are variously disappointed by this, but go along with it anyway because, well, they're not exactly given a choice.

Having left everything they ever knew behind, the family gets another shock - Mom's gonna get her book published! Mom goes on a book tour, leaving the family in her husband's hands for a few days. HilarityEnsues as total chaos erupts. One kid runs away, the family chases him down (leading to a nice YouAreNotAlone moment), Dad realizes what his job has done to his kids and both he and his wife resolve to put family first as the two continue to pursue their careers while living in the new home, their family stronger than ever.

A generally inoffensive family comedy.

A sequel was released, running with basically the same premise but a different plot, which performed much poorer at the box office.

Plays straight pretty much every trope listed under FamilyTropes, SiblingTropes and TheParentTrope.

!!This film provides examples of:

* ABoyAndHisX: Beans the frog is Mark's confidant. [[spoiler: The fact that nobody seems to care about Beans' death is what convinces Mark to run away to Midland.]]
* ActuallyPrettyFunny: "You soaked his underpants in meat. That was ''wrong''. Funny! But ''wrong.''"
* BookEnds: The film starts with Kate listing negative or neutral things the family associates with the number twelve, and the film ends with her listing positive things the family associates with number twelve.
* BrattyHalfpint: Sarah. Especially when she's torturing Lorraine.
* ChildHater: Hank. He flat out calls Nora's siblings monsters.
* ChildProdigy: Kim and Jessica are very brainy for their age.
* FoodAndAnimalAttraction: The kids prank the Nora's boyfriend by dipping his underclothes in meat and setting the family dog on him.
* HappilyMarried: Tom and Kate are still very much in love.
-->'''Tom''': Were you just checking me out?
-->'''Kate''': Maybe I was.
-->'''Tom''': Twelve kids later, and we still got the heat!
* InNameOnly: The only similarity it has with the book is that there are twelve kids.
* MassiveNumberedSiblings: The Baker clan has, well, a [[ExactlyWhatItSaysOnTheTin dozen]].
-->And yet, it doesn't make them a [[IncrediblyLamePun Baker's dozen]].
* MeaningfulEcho: Shortly after moving to Chicago, Mark draws a picture of their old house, which was his[[spoiler: "Favorite place in the world"]] After he runs away, the police tell Tom that they searched train and bus stations. He claims that his son wouldn't take a train or a bus. Nora then says that she always wanted to run away to Chicago, which was her[[spoiler: "Favorite place in the world"]]. This makes him realize exactly where Mark went.
* NeverTrustATrailer: The trailer portrays this as a nice, comedic family film. While it has its great moments for sure, the film gradually gets more serious as it goes on as Mom's book tour drags on and Tom is forced to cope with temporarily being a single dad.
* SingleMindedTwins: Both pairs of twins act quite similar to each other. It's more noticeable with Kyle and Nigel, since they're identical.
* {{Tomboy}}: Sarah.
* TheReasonYouSuckSpeech: Charlie delivers one to his dad near the climax of the first film.
* TheThreeCertaintiesInLife: Hank notes, "All I'm saying is families are inevitable; they're like death or taxes."
* TheUnfavorite: Mark is treated like this by his siblings, being called Fedex.

!!The sequel provides examples of:

* CallBack: When he gets fed up with Jimmy, Tom asks Sarah if she's still "in touch with [her] dark talents." She sets up the same meat trick she pulled in the first movie.
* DisasterDominos: The destruction of the clam bake. It all starts when Mark absentmindedly sets his backpack full of fireworks next to an open flame.
* TheGloriousWarOfSisterlyRivalry: Lorraine and Sarah have entered this even deeper than in the first film.
* HiddenDepths: Sarina is initially presented as Jimmy's DumbBlonde trophy wife, but she truly wants to be a good mother to her stepkids. When she sees the wedge that Jimmy's pressuring and obsession with upping Tom is driving between himself and his kids, she sets him straight.
* InstantBirthJustAddWater: Averted. Nora is giving hints all day that she's going into labor. She keeps her mouth shut though, so it won't ruin the contest for the family. [[spoiler: Until her water breaks in the middle of the final event and she finally has to admit she needs to go to the hospital.]] There's still a significant amount of time from then until the delivery, though.
* LotsOfLuggage: When Lorraine shows up at the cabin, Sarah keeps jabbing at her for her huge suitcase. "So is this one just for your makeup?"
* NauticalKnockout: This happens to Tom.
* TrophyWife: Sarina, Jimmy's new wife of "six wonderful months."
* UglyGuyHotWife: Jimmy Murtaugh and his new trophy wife, Sarina.
* UnluckyExtra: The poor old man in the wheelchair. Every time he is on screen, he somehow gets pushed into the water. You think he would put on his parking brake, or have someone park him in a less precarious spot.