Underrated ''American Idol'' contestants: Jessica Sierra
FINISHING POSITION Tenth place (season 4)
GREATEST HIT A bawdy, throaty take on ''The Boys Are Back in Town'' that left even the unflappable Mr. Cowell blushing
WHY WE'RE BITTER We never understood Simon's insistence that Sierra suffered from a lack of ''likability.'' Unless, of course, you don't like a genuinely nice gal with a big voice, an even bigger smile, and the ability to put her own stamp on Idol's well-worn songbook.