What's Up, Doc?: Celebrating 60 Years of Looney Tunes

What's Up, Doc?: Celebrating 60 Years of Looney Tunes is a 1990 television special that aired on CBS on February 15th, 1990, commemorating the 60th anniversary of the Looney Tunes cartoon shorts. The special sees Bugs Bunny, Daffy Duck, and the other Looney Tunes characters take over the Warner Bros. lot and cause all kind of chaos throughout the studio as part of their big celebration. This special was the last to feature the voice of Mel Blanc as the Looney Tunes characters in new material; as Blanc died during production, several other voice actors filled in for him to complete the special, which was dedicated to his memory ("Warner Bros. dedicates this special to MEL BLANC (1908-1989), who for over 50 years, let the Looney Tunes do the talking. We'll miss you, old friend.")

Cast
Mel Blanc as Bugs Bunny, Daffy Duck, Porky Pig, Elmer Fudd, Tweety Bird, Sylvester J. Cat, Yosemite Sam, Foghorn Leghorn, Marvin the Martian, Speedy Gonzales, Pepe Le Pew, Tasmanian Devil, Wile E. Coyote, Henery Hawk, Sylvester Jr., Barnyard Dawg, Ralph Wolf, Sam Sheepdog, Beaky Buzzard, Hector the Bulldog, Slowpoke Rodriguez, Hugo the Abominable Snowman, Mac, Spike the Bulldog, Papa Bear, Hubie, Marc Anthony, Pussyfoot

Stan Freberg as Pete Puma, Tosh, Chester the Terrier, Junior Bear, Bertie

Don Messick as Bosko the Talk-Ink Kid

Larry Storch as Cool Cat, Merlin the Magic Mouse

June Foray as Granny, Witch Hazel, Mama Bear

Bill Roberts as Michigan J. Frog (via archive recordings)

Paul Julian as Road Runner (via archive recordings)

Additional Voices: Charlie Adler, Joe Alaskey, Dee Bradley Baker, Jeff Bennett, Bob Bergen, Jeff Bergman, Noel Blanc, Greg Burson, Jim Cummings, Bill Farmer, Maurice LaMarche, Gary Martin, Rob Paulsen, Keith Scott, Frank Welker, Billy West