Bill Prady Bill Prady ( b . June 7 , 1960 ) is a writer and executive producer heading the 2015 ABC TV series " The Muppets " . Prady is now best known as the co - creator of the CBS series " The Big Bang Theory " , but his career in entertainment started at The Jim Henson Company . Utilizing his background as a computer programmer , Prady started at Henson in the mid - 1980s as a production assistant and researcher on The Muppet Institute of Technology . The project never came to fruition , but he moved over to Henson ' s licensing department working on various software projects with Chris Cerf , including the Muppet Learning Keys . Eventually , Prady started writing material for the Muppets , the first of which was a speech given by Rowlf the Dog at the New York City post office for the dedication of the Love Stamp . He wrote segments for the Muppet Meeting Films , consulted on scripts for the " Muppet Babies Live ! " shows ( receiving writing credit on the third , " " ) , and served as an editorial assistant on the documentary " " . He went on to write material for the Dial - a - Muppet service , and ultimately wound up writing scripts for television , starting with two episodes of the animated " Fraggle Rock " : " " and " . " This work extended to the View - Master Interactive Vision videos " " and " Muppet Madness " . In print , Prady penned scripts for the " Muppet Babies " comics ( including the " Star Trek " parody " Out of this World , " " Upside Down Land , " and several others ) , as well as comic stories for " Muppet Magazine " ( including " A Doozer Dilemma " from the Fall 1988 issue ) . Beginning production on " The Jim Henson Hour " , Prady and Juhl wrote the initial pitch shown to networks in order to sell the show . He later found himself on the writing staff , and contributed the script for " Miss Piggy ' s Hollywood " . That same year , he teamed with Jim Lewis to provide the story for the Muppets ' appearance on " The Cosby Show " , and co - wrote the Muppets ' segment for " The Earth Day Special " with Jerry Juhl . In 1990 , he worked on his last project with Jim Henson receiving sole writing credit on " Muppet * Vision 3D " at Walt Disney World , as well as the pre - show that plays in the queuing area for the show . Also for Disney , he wrote the " Pigerella " segment for " Disneyland ' s 35th Anniversary Celebration " featuring Miss Piggy as Cinderella . That same year , he wrote material for a proposed marketing campaign called " The Pig of the Nineties " , which would have been an elaborate , years - long effort to reinvigorate Miss Piggy ' s popularity , but was cancelled after Henson ' s untimely death . Following Henson ' s passing , Prady wrote " The Muppets Celebrate Jim Henson " with Jerry Juhl , and published an editorial in tribute to Henson in the June 28 , 1990 issue of " Rolling Stone " . In the following years , he contributed material for the direct - to - video productions " Muppet Classic Theater " ( the " King Midas " and " The Boy Who Cried Wolf " segments ) and " Billy Bunny ' s Animal Songs " , both with Jim Lewis . He also wrote the 1993 " Inaugural Celebration for Children " to kick off Bill Clinton ' s first term as President of the United States , which featured several segments with the Muppets . Prady went on to become writer and producer on such series as " Dharma & Greg " and " Gilmore Girls " and is executive producer and co - creator ( with Chuck Lorre ) of the CBS sitcom " The Big Bang Theory " . In 2006 , Prady wrote and produced a short presentation pilot featuring the Muppet characters . The pilot for a possible series was shot in " mock documentary " style and focused on the Muppets ' efforts to launch a network television series . The presentation pilot was directed by Bill Barretta and featured puppetry by Barretta , Dave Goelz , Steve Whitmire and Eric Jacobson . In 2015 , Prady returned to his pilot idea and shot a 10 - minute presentation which was subsequently picked up by ABC to air in the Fall as " The Muppets " . He serves as producer on the series with Bob Kushell . External links . _ _ NOWYSIWYG _ _