Franklin "Frank" Caliendo (born January 19, 1974) is an American comedian and impressionist, best known for his work on the Fox Network television series MADtv, and has been the in-house prognosticator for Fox NFL Sunday . In 2007 and 2008, he performed his impersonations on his own show, Frank TV, which aired on TBS . He is known for his impressions of NFL color commentator John Madden and United States Presidents George W . Bush and Bill Clinton, and for his frequent appearances on The Bob & Tom Show . He has performed as many as 120 impressions . His signature 'John Madden' impression is frequently seen on Fox NFL Sunday, The Best Damn Sports Show Period and Mohr Sports . Caliendo has also appeared on Comedy Central's Comedy Central Presents, as well as many radio shows, including Mike In The Morning Show in Detroit on 101 WRIF, The Dan Le Batard Show, The Junkies, Bob & Sheri, The Bob & Tom Show, Mike and Mike in the Morning, Opie and Anthony, The Don and Mike Show, Rise Guys, Bubba the Love Sponge, The John Boy and Billy Big Show, The Howard Stern Show, Mike and the Mad Dog, Elliot in the Morning, The Sports Inferno, The Rick and Bubba Show, The Roe Conn Show, Preston and Steve, and Holmberg's Morning Sickness, and Lamont & Tonelli on 107 .7 The Bone in San Francisco . For two short seasons, Caliendo starred on Frank TV, his own sketch show on the TBS that began airing in November 2007 . Frank is its host and performs in sketches in full makeup as characters he impersonates. Frank joked that he "wanted the show to be called The Chappelle Show [ sic ], but the lawyers wouldn't allow it," referring to the publicity he would likely receive from naming his show after another popular comedian. In August 2006, Caliendo announced he would not return to MADtv for its 2006-2007 season. .