David Cook
''Bar-ba-sol,'' David Cook (2008)

Keep your ''Light On,'' Idol campers, but for us, the rockingest cut on David's debut is the underappreciated ''Bar-ba-sol.'' Is it about shaving cream? Well, the season 7 champ is impeccably stubbly! But the song's cryptic, vaguely vampiric lyrics (''Holding on to what I don't know/ til the daylight turns to ash and blows away/ missing keys, bloody nose / consequences of what I chose'') recalls something more like a cross between Twilight and the after-effects of one really, really bad night on the town. Who knew Cook could be such a bad-ass? — Leah Greenblatt

Check out a live performance of ''Bar-Ba-Sol'' here.