U.S. singer Clay Aiken will guest star as Kenny, the cafeteria worker. on the NBC-TV's comedy "Scrubs" Tuesday.

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There are rumors of job lay offs at Scared Heart Hospital and Kenny is afraid he will lose his job because he is one of the last hired at the hospital.

Luckily, a fundraising talent show is scheduled at the hospital and Kenny has a chance to save his job by singing.

"I guess I have a little experience with live audiences, so they said, 'Why not come out and give it a shot?' "according to Aiken, a runner up on Fox's "American Idol's" second season.

"Scrubs" is normally shot with only one camera and no studio audience, but for part of this episode four cameras and a live audience are used, MTV.com reported.

Monday, Aiken will appear on ABC-TV's "The Jimmy Kimmel Live."