Clay Aiken
was just officially announced as one of the contestants on "Celebrity Apprentice" ... but whatever happened to everyone else from Season 2 of "American Idol"?

Do names like Vanessa Olivarez, Corey Clark, Kimberly Caldwell and Josh Gracin ring a bell?

Check out the gallery above to see what they're all up to these days.

Warning: "Celebrity Apprentice" may be as good as it gets.

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