Title: Knight Rider (2008 film)
Content:  Entertainment President Ben Silverman to revive Knight Rider. NBC announced on December 13, 2007 that the new two hour pilot would air on February 17, 2008. Two new cast members were also announced; Will Arnett as the voice for the new KITT Mustang, and Sydney Tamiia Poitier as FBI agent Carrie Rivai. Less than two weeks before the television film aired, Arnett stepped down as the voice of KITT after General Motors informed him of a conflict of interest, since Arnett does voiceover work for GMC Trucks. As a result, Val Kilmer landed the role of voicing KITT. Several scenes use the fictional Montecito Resort and Casino, from NBC's series Las Vegas.
Title: Knight Rider (season 1)
Content: David Hasselhoff as Michael Knight ; William Daniels as the voice of KITT (Knight Industries Two Thousand) (uncredited) ; Edward Mulhare as Devon Miles ; Patricia McPherson as Dr. Bonnie Barstow ; Richard Basehart as Wilton Knight, and the voiceover of Wilton Knight ; Peter Cullen as the voice of KARR (Knight Automated Roving Robot) 
Title: Knight Rider (season 2)
Content: David Hasselhoff as Michael Knight and Garthe Knight ; William Daniels as the voice of KITT (Knight Industries Two Thousand) (uncredited) ; Edward Mulhare as Devon Miles ; Rebecca Holden as April Curtis ; Richard Basehart as voice of Wilton Knight 
Title: Knight Rider (season 3)
Content: David Hasselhoff as Michael Knight ; William Daniels as the voice of KITT (Knight Industries Two Thousand) (uncredited) ; Edward Mulhare as Devon Miles ; Patricia McPherson as Dr. Bonnie Barstow ; Richard Basehart as the voice of Wilton Knight ; Paul Frees as the voice of KARR (Knight Automated Roving Robot) (uncredited). 
Title: Knight Rider (1982 TV series)
Content:  Daniels as the voice of KITT, or Knight Industries Two Thousand, the autonomous, artificially intelligent car, with whom Michael Knight is partnered. Daniels, who simultaneously starred on St. Elsewhere, requested not to be credited for his role as KITT's voice. ; Edward Mulhare as Devon Miles, the leader of FLAG, who appeared in every episode to provide mission details to Knight and KITT. He was also the spokesman for FLAG whenever it came under scrutiny. ; Patricia McPherson as Dr. Bonnie Barstow (Seasons 1, 3–4), KITT's chief technician and romantic tension for Michael. The character was dropped after the first season, but due to strong fan reaction 
Title: William Daniels
Content:  Emmy awards. Concurrently, he provided the voice of KITT in Knight Rider from 1982 to 1986. Daniels said in 1982, "My duties on Knight Rider are very simple. I do it in about an hour and a half. I've never met the cast. I haven't even met the producer." He reprised the voice-only role of KITT in 1991 for the television movie Knight Rider 2000, and again in the theatrical comedy movie The Benchwarmers. He performed the role in AT&T and GE commercials about talking machines, and twice in The Simpsons as well as at the Comedy Central Roast of his co-star 
Title: Knight Rider (season 4)
Content: David Hasselhoff as Michael Knight ; William Daniels as the voice of KITT (Knight Industries Two Thousand) (uncredited) ; Edward Mulhare as Devon Miles ; Patricia McPherson as Dr. Bonnie Barstow ; Peter Parros as Reginald Cornelius III aka RC3 ; Richard Basehart as the voice of Wilton Knight 
Title: KITT
Content:  by a script assistant, with voice actors recording KITT's dialog later. David Hasselhoff and original series voice actor William Daniels first met each other six months after the series began filming. KITT's evil twin is KARR, whose name is an acronym of Knight Automated Roving Robot. KARR was voiced first by Peter Cullen and later by Paul Frees in seasons one and three, respectively, of the NBC original TV series Knight Rider. A 1991 sequel film, Knight Rider 2000, is centered on KITT's original microprocessor unit transferred into the body of the vehicle intended to be his successor, the Knight Industries Four Thousand (Knight 4000), voiced by Carmen Argenziano and William Daniels. Val Kilmer voiced KITT in the 2008–2009 Knight Rider series.
Title: Knight Rider (2008 film)
Content: Justin Bruening as Michael "Mike" Traceur ; Deanna Russo as Sarah Graiman ; Bruce Davison as Charles Graiman ; Sydney Tamiia Poitier as FBI Special Agent Carrie Rivai ; Val Kilmer as the Voice of KITT ; David Hasselhoff as Michael Knight ; Susan Gibney as Jennifer Traceur ; Wayne Kasserman as Dylan Fass ; Jack J. Yang as Cross ; Kevin Dunigan as Smokeee ; Greg Ellis as Welther 
Title: Knight Rider (2008 TV series)
Content: Justin Bruening as Michael "Mike" Knight (originally known as Mike Traceur): the son of the original Michael Knight, driver of the first KITT. ; Deanna Russo as Dr. Sarah Graiman: the daughter of Charles Graiman and romantic interest of Mike Knight. ; Val Kilmer as the Voice of KITT: the artificially intelligent automobile. Will Arnett was originally cast for the voice of KITT and had his lines recorded but he was later replaced by Val Kilmer. ; Paul Campbell as Billy Morgan ; Smith Cho as Zoe Chae (Episodes 13–17, Guest Star in Episodes 1–12) ; Bruce Davison as Dr. Charles Graiman: KITT's creator and Sarah's father. (Episodes 1–12) ; Sydney Tamiia Poitier as FBI Agent Carrie Rivai (Episodes 1–11) ; Yancey Arias as NSA Agent Alex Torres (Episodes 1–12) ; Peter Cullen as the Voice of KARR 2.0, the evil artificially intelligent automobile 

Question: who plays the voice of kitt in knight rider?
Answer: William Daniels.