Keith Ferguson
Keith Ferguson (born February 26, 1972) is an American voice actor, well known as the voice of Blooregard Q. Kazoo (or "Bloo" for short) on the Cartoon Network animated series Foster's Home for Imaginary Friends. He also provides a number of "sound-alike" portrayals in the VO industry including Harrison Ford's Han Solo and Indiana Jones in Robot Chicken and the voice of Lightning McQueen in Cars Toons: Mater's Tall Tales, filling in for Owen Wilson (while Wilson continues his portrayal of McQueen for the big screen in Cars 2). Description above from the Wikipedia article Keith Ferguson, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Known for
The Witcher: Nightmare of the Wolf 
The Day the Earth Blew Up: A Looney Tunes Movie 
Batman vs Teenage Mutant Ninja Turtles 
Batman: Year One 
Megamind vs. The Doom Syndicate 
Justice Society: World War II 
Justice League: Crisis on Infinite Earths - Part Two 
Foster's Home for Imaginary Friends 
Ultimate Avengers: The Movie 
Bambi and the Great Prince of the Forest 
Robot Chicken: Star Wars III 
Mater's Tall Tales 
Merry Little Batman 
We Bare Bears: The Movie 
Batman: Death in the Family 
Sgt. Rock 
Megamind Rules! 
Time Travel Mater 
Teen Titans Go! & DC Super Hero Girls: Mayhem in the Multiverse 
Foster's Home for Imaginary Friends: Destination Imagination 
Miss Fritter's Racing Skoool 
Air Mater 
Elena and the Secret of Avalor 
Click, Clack, Moo: Christmas at the Farm