The most substantive of the cameos comes from Josh Groban, whose status as one of Hollywood's go-to good sports never has been questioned.

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Oprah put the tablet on her list of favorite things in time for the Holiday season, along with Beats by Dre earbuds and a Josh Groban album.

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Wearing a Yankees dog collar, and falling asleep on a pinstriped blanket while listening to Josh Groban songs, Mitch is among 54 Labs in the show (golden retrievers lead with 61).

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