David Archuleta
Imagine
Archuleta's performance brought tears streaming down Paula Abdul's face. This is something that only happens every few hours people! It's hard to argue against his vocal control and timbre, both of which are far more mature than they should be for a 17-year-old. But to rain briefly on the parade of the likely last guy standing, it's not so cool to sing Imagine like you were Mariah Carey—finding notes where there was originally just, you know, a note.