Bunsen Honeydew to Dr. Pinhole Burns. He is the founder of Muppet Labs. Both scientists were later incorporated into the "Muppet Babies" animated series. Howie Mandel and Dave Coulier voiced Bunsen, and Frank Welker provided Beaker's squeaky meeps. Bunsen made an appearance in "Little Muppet Monsters" voiced by Bob Bergen. Following Richard Hunt's death in 1992, the role of Beaker was taken over by Steve Whitmire. In a 2004 Internet poll sponsored by the BBC and the British Association for the Advancement of Science, Beaker and Dr. Bunsen Honeydew were voted Britain's favourite cinematic scientists. They beat Mr. Spock, their closest rival,
The Muppets' Wizard of Oz the initial script was written, ultimately deciding to adapt plot elements from Baum's original novel rather than the 1939 Metro-Goldwyn-Mayer musical film, "The Wizard of Oz". As with the preceding Muppet films, "The Muppets' Wizard of Oz" became a musical, and included five new songs written and composed by Michael Giacchino. The special is the first Muppets special without the involvement of veteran performer Jerry Nelson following his 2004 retirement from physical performing. His characters of Lew Zealand and Floyd Pepper, were respectively performed by Bill Barretta and John Kennedy. Barretta also debuts as the new permanent performer of Dr.