Question: Who was originally cast for the voice of Shrek?
About the article "Shrek", section "Abstract".

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Shrek is a 2001 American computer-animated fantasy-comedy film produced by PDI/DreamWorks, released by DreamWorks Pictures, directed by Andrew Adamson and Vicky Jenson, featuring the voices of Mike Myers, Eddie Murphy, Cameron Diaz, and John Lithgow.
It is loosely based on William Steig's 1990 fairy tale picture book "Shrek!
", and somewhat serves as a parody film, targeting other films adapted from numerous children's fantasies (mainly animated Disney films).
The film made notable use of popular music; the soundtrack includes music by Smash Mouth, Eels, Joan Jett, The Proclaimers, Jason Wade, Baha Men, and John Cale (covering Leonard Cohen).
The rights to the books were originally bought by Steven Spielberg in 1991, before the founding of DreamWorks, when he thought about making a traditionally animated film based on the book.
However, John H. Williams convinced him to bring the film to DreamWorks in 1994, the time the studio was founded, and the film was put quickly into active development by Jeffrey Katzenberg after the rights were bought by the studio in 1995.
"Shrek" originally cast Chris Farley to do the voice for the title character, recording about 80%–90% of his dialog.
After Farley died in 1997 before he could finish, Mike Myers was brought in to work for the character, who after his first recording decided to record his voice in a Scottish accent.
The film was also originally planned to be motion-captured, but after poor results, the studio decided to get PDI to help "Shrek" get its final computer-animated look.
Earning $484.4 million at the worldwide box office, the film was a critical and commercial success.
"Shrek" also received promotion from food chains such as Baskin-Robbins (promoting the film's DVD release) and Burger King.
It was acclaimed as an animated film worthy of adult interest, with many adult-oriented jokes and themes but a simple enough plot and humour to appeal to children.
"Shrek" won the first ever Academy Award for Best Animated Feature and was nominated for the Academy Award for Best Adapted Screenplay.
The film was also nominated for six British Academy of Film and Television Arts awards, including the BAFTA Award for Best Actor in a Supporting Role for Eddie Murphy for his voice-over performance as Donkey, and won the BAFTA Award for Best Adapted Screenplay.
The film's main (and title) character was awarded his own star on the Hollywood Walk of Fame in May 2010.
"Shrek" established DreamWorks Animation as a prime competitor to Pixar in the field of feature film animation, particularly in computer animation.
The film's success prompted DreamWorks to create three sequels, "Shrek 2", "Shrek the Third", and "Shrek Forever After", two holiday specials, "Shrek the Halls" and "Scared Shrekless", and a spin-off film, "Puss in Boots".
A fifth film, planned as the last of the series, was cancelled in 2009 with the announcement that the fourth film would conclude the series.
The film's success also inspired other merchandise, such as video games, a stage musical and even a comic book by Dark Horse Comics.
Steven Spielberg acquired the rights for the book in 1991, planning to produce a traditionally animated film based on the book.
However, around the time DreamWorks was founded, producer John H. Williams brought the book to DreamWorks, and co-founder Jeffrey Katzenberg was interested in the concept.
As a result, DreamWorks ended up acquiring the rights for the book in 1995, and Katzenberg quickly put the film in active development.
"Shrek" was released in May 2001, starring the voice talents of Mike Myers, Eddie Murphy, and Cameron Diaz.
(Chris Farley had originally been cast to voice the title character in the film, but died before being able to complete the project in 1997; DreamWorks then recast the role to Mike Myers.)
The film was an immediate commercial and critical success, and won the first ever Academy Award for Best Animated Feature.
Following the film's success, DreamWorks produced a sequel, "Shrek 2", which was released in May 2004 and also an instant success.
This was followed by two more sequels: "Shrek the Third" (released in May 2007) and "Shrek Forever After" (released in May 2010).
Spin-offs of the "Shrek" film series include the holiday specials "Shrek the Halls" (2007) and "Scared Shrekless" (2010); a musical adaption; and the film "Puss in Boots" (released in November 2011), a spin-off prequel starring the character of the same name who appears in the "Shrek" franchise. 
The "Shrek" franchise from DreamWorks Animation, based on William Steig's picture book with the same name, consists of four computer-animated films including: "Shrek" (2001), "Shrek 2" (2004), "Shrek the Third" (2007), and "Shrek Forever After" (2010).
A short 3D film, "Shrek 4-D", which originally was a theme park ride, was released in 2003.
A spin-off project, the Christmas television special "Shrek the Halls", premiered on ABC in the USA and worldwide in 2007 to successful ratings as well as another spin-off project, the Halloween television special "Scared Shrekless", which premiered on NBC in the USA in 2010.
A spin-off film titled "Puss in Boots" was released in October 2011.
A Broadway musical adaption was also released.
The series primarily focuses on Shrek, a reclusive but kindhearted ogre, who becomes a respected hero with an ever growing collection of friends and family in a fairy tale world in spite of himself.
In May 2010, "The New York Times" called the principal Shrek characters "brilliantly realized" and said "nearly a decade after the first "Shrek" film they remain as vital and engaging fusions of image, personality and voice as any characters in the history of animation.
"The series was a great financial success, being the 8th highest-grossing franchise of all time, and the highest-grossing animated franchise. 
"Shrek" had three sequels which included "Shrek 2", "Shrek the Third" and "Shrek Forever After".
Although "Shrek 2" received similar acclaim from critics, the last two movies did not receive as much critical acclaim.
They were however still box office hits.
There were also two holiday specials called "Shrek the Halls" and "Scared Shrekless", a spin-off called "Puss in Boots" (a prequel to the Shrek series, exploring Puss's origin story and his life prior to meeting Shrek and Donkey) and several shorts.
A fifth feature film was also planned for release, but was later cancelled in 2009, after it was decided that "Shrek Forever After" (originally titled "Shrek Goes Fourth") was to be the last film in the series. 
  Act I  "Overture" – Orchestra  "Big Bright Beautiful World" – Mama Ogre, Papa Ogre, Shrek  "Story of My Life" – Guard, Fairytale Creatures  "The Goodbye Song" – Shrek, Fairytale Creatures≠  "Don't Let Me Go" – Donkey  "I Know It's Today" – Young Fiona, Teen Fiona, Adult Fiona  "Welcome to Duloc" – Duloc Performers   "What's Up, Duloc?"
– Lord Farquaad, Duloc Performers  "Travel Song" – Donkey, Shrek  "Donkey Pot Pie" – Dragon, Donkey  "This is How a Dream Comes True" – Fiona, Shrek, Donkey, Dragon  "Who I'd Be" – Shrek, Fiona, Donkey  Act II  "Entr'acte" – Orchestra  "Morning Person" – Fiona, Bluebird, Pied Piper, Tapping Rats  "I Think I Got You Beat" – Fiona, Shrek  "The Ballad of Farquaad" – Lord Farquaad, Guards  "Make a Move" – Donkey, Three Blind Mice  "When Words Fail" – Shrek  "Morning Person" (Reprise) – Fiona  "Build a Wall" – Shrek  "Freak Flag" – Fairytale Creatures  "Big Bright Beautiful World" (Reprise) – Shrek  "This Is Our Story" – Fiona, Shrek, Donkey, Fairytale Creatures  "I'm a Believer" – Shrek, Fiona, Donkey, Entire Company≠ (as of October 2, 2009) Musical numbers.
Broadway.≠ Not included on the original Broadway cast recording.
"I'm a Believer" was recorded later and was released as a single, however.