->''"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 Creator/SteveMartin about him, his wife and their twelve kids. Count 'em, ''twelve''.

VeryLooselyBasedOnATrueStory, in that there was a [[Literature/CheaperByTheDozen 1948 book]] and 1950 FilmOfTheBook 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 Frank Gilbreth, Sr's death. Mrs. Lillian Gilbreth (the mother) served as an adviser to five American presidents (Hoover, Roosevelt, Eisenhower, Kennedy, and 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 is happy, but 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 grudgingly go along with it anyway. Having left home, 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.

A generally inoffensive family comedy.

A sequel was released, running with basically the same premise but a different plot, in which the family goes to a lake for a vacation but run into an old rival of Dad's---who has a big family of his own. Naturally, everyone else ends up hitting it off well, which ultimately leads out to some fallout with the fathers and their families, but they make up in time to win a contest. Meanwhile, the oldest daughter gives birth to her first child.

As inoffensive as the former, but 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.]]
* AccidentalMisnaming: Tom gets Mark's name wrong twice throughout the film. Both times, Mark corrects him. The second time, Tom corrects himself after getting it wrong.
-->'''Mark''': Have you seen my frog, Dad?
-->'''Tom''': Sorry, Charlie. Nigel. Kyle.
-->'''Mark''': It's Mark.
-->'''Tom''': I knew that.
* ActuallyPrettyFunny: "You soaked his underpants in meat. That was ''wrong''. Funny! But ''wrong.''"
* {{Adorkable}}: Hank.
* BigFancyHouse: The Bakers' new home after they move house early on in the film.
* 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 [[TriumphantReprise 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. (This was after they set his pants on fire.)
* ChildProdigy: Kim and Jessica are very brainy for their age.
* EnfanteTerrible: Again, Sarah.
* FoodAndAnimalAttraction: The kids prank the Nora's boyfriend by dipping his underclothes in meat and setting the family dog on him.
* {{Foreshadowing}}: Tom mentions in the opening scene with Kate about how the family could do with change, citing the bed's mattress as an example. This foreshadows pretty much everything that happens over the course of the film without drawing explicit reference to it, as many things change for the Baker family over the course of the film: Shake's offer for Tom to coach the Stallions, which in turn relocates the family to a new home and offers Tom the chance for his dream job, Kate's book getting published, Tom having to look after the kids and house on his own when Kate goes off on her book tour, and Mark running away, which not only causes Nora to dump Hank when he refuses to help her look for him, but causes the family to become closer.
* 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.
* ItsAllAboutMe: Hank. He's a self-absorbed model and actor who worries about what the Baker kids will do to him when he and Nora visit (to be honest, though, he is right to worry, after they set his pants on fire), because of what it could potentially do to his image and career. Nora doesn't see him for what he is (or plain doesn't want to) until Mark runs away and Hank doesn't care at all, preferring to watch a commercial of himself on TV instead of going to help, causing Nora to dump him.
* {{Jerkass}}:
** Hank. He's a ChildHater, [[ItsAllAboutMe is very self-centered]] and refuses to go with Nora when Mark has run away, because he's too busy watching himself on TV. It's this that causes Nora to see Hank for what he is and dump him.
** Tina as well. It's pretty clear from the off that she doesn't like the Bakers because of how many kids they have and their parenting methods. She also seems a snob that fusses over Dylan and shows no sympathy to Kate when Mark has run away.
* JerkWithAHeartOfGold: Most of the Baker kids. Sure, they may not have cared much when Mark announced Beans had died, but they still felt bad when he ran away, and still see him as very much a brother and member of the family.
-->'''Jake''': Without you, we wouldn't be the twelve Bakers any more. We'd be like... eleven.
* MajorInjuryUnderreaction: Dylan gets a injured by a grown man falling on him. It was still his best birthday ever.
* 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 is 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 has gone.
* MsFanservice: Tina.
* OutOfFocus: Most of the kids aside from Mark.
* ShirtlessScene: Tom Welling's character briefly appears shirtless (unsurprisingly, given how often [[{{Superman}} his character]] on ''Series/{{Smallville}}'' did.)
* 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: Lorraine delivers one to her dad towards the middle of the film.
-->'''Lorraine''': You just used your own son as a vomit mop!
** Charles also gives one to him (towards the end of the film).
* TheThreeCertaintiesInLife: Hank notes, "All I'm saying is families are inevitable; they're like death or taxes."
* TheUnfavorite: Mark, a.k.a. "Fedex", at least in the eyes of his siblings.

!!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.
* DemotedToExtra: Mark. He was ''the'' main character, aside from the parents, in the first movie, but is barely in this one.
* DisasterDominoes: 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.
* ForgottenFallenFriend: Mark never even mentions his frog.
** It could be interpreted as Mark having moved on after losing Beans.
* 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.
* PutOnABus: All the supporting cast.
* 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.