Question: How many Toy Story movies are there?
About the article "Toy Story", section "Sequels, shows, and spin-offs".

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Main character Sheriff Woody of the Toy Story animated movies by Pixar is named after Strode. 
  Dragonball Evolution  Toy Story  Toy Story 2  Another Cinderella Story  Titan A.E.
Fantasia 2000  Horton Hears a Who!
and more  
John Lasseter calls actor John Ratzenberger "Pixar's good luck charm", as Ratzenberger has played a role in each Pixar feature.
"Toy Story, Toy Story 2, and Toy Story 3" - Hamm  "A Bug's Life" - P.T.
Flea  "Monsters, Inc." and "Monsters University" - Abominable Snowman  "Finding Nemo" - School of Fish  "The Incredibles" - The Underminer  "Cars" and "Cars 2" - Mack * At the end of "Cars", there is a drive-in theater that shows John Ratzenberger as some of the parts of the movies, which are car-versions of Toy (Car) Story, A Bug's Life, and Monsters (Trucks) Inc. Mack even notes that they keep using the same actor again.
"Ratatouille" - Mustafa the waiter  "WALL-E" - John  "Up" - Tom the foreman  "Brave" - Gordon, the guard  
Aside from starring in her own movies, Barbie was also featured as a supporting character in Toy Story series, and one of the main characters of My Scene movies.
There are also few short films and a web show with five seasons.
Barbie was supposed to appear in the first Toy Story movie as Woody's girlfriend, but she was replaced with Bo Peep.
This is because Mattel did not want Barbie to be given a personality, because, to make Barbie dolls unique to every purchaser, the purchaser was supposed to think of their own personality for Barbie.
In 2006, Mattel re-branded My Scene franchise in which Barbie was replaced by Kennedy, saying that "Barbie moved to California". 
The Pixar universe is a theoretical "shared universe" in which every character that is created by Pixar exists, sharing characteristics and an internal logic.
Media discussion about a "Pixar Universe" has existed since at least 2003, and has been referred to in disparate sources such as "Slash Film", "Washington Times", "Reno Gazette-Journal", and "MTV News" Pixar employee Jay Ward denied that the films take place in the same universe, saying: "It's almost like the 9/11 conspiracy theories... it's like, really?
No, the movies were sort of made in a different order by different directors in different times, in different places.
It's cool that it all worked out that way, but it probably was not intentional.
"In "To Infinity and Beyond!
: The Story of Pixar Animation Studios", Karen Paik states that there are many internal references between various films in The Pixar Universe.
In 2009, "CityNews Toronto" made comparisons between nine "Pixar Universe" films.
In his 2013 thesis entitled "The Pixar Theory", Jon Negroni wrote that that every character created by Pixar lives within a single fictional universe.
He acknowledges that the concepts behind his thesis were derived from an episode of the Cracked.com video series "After Hours", written by Daniel O'Brien.
In his post, Negroni discusses various films and how they relate in a timeline of events.
Films he examines include "A Bug's Life", "Toy Story 2", "Monsters, Inc.", "Finding Nemo", "The Incredibles", "Cars", "Ratatouille", "WALL-E", "Up", "Toy Story 3", "Cars 2", "Brave", and "Monsters University".
After his thesis was posted on the internet on July 11, 2013, it became a viral hit.