60. Josh Groban

Singer and actor Josh Groban has sold over 25 million records and performed with legends like Sting, Celine Dion and Barbra Streisand, which is why it was so surprising that he allowed Gilbert and Frank into his home to interview him. In an animated and laugh-filled discussion, Josh shares his passion for comedy, his affection for the "Problem Child" movies and his memories of guest-starring on "The Office" and "Ally McBeal." Also, Josh coins a catch phrase, tackles the role of Tevye (at age 17!), mimics Jay Leno and duets with "Adele Dazeem." PLUS: "The 5,000 Fingers of Dr. T."! Gladys Knight & The Pips! "The Beastmaster"! Old Groucho returns! And Josh sings "the hits" of Gilbert Gottfried!

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