Jack Johnson

John Mayer might snag all the headlines with tales of his sexual conquests, but he's been dethroned as the king of adult alternative. That title now belongs to surfer-dude Jack Johnson. As the sprawling En Concert clearly demonstrates, the reasons for this have to do with charisma and artistry. Not only is Johnson a magnetic performer, he's a savvy songwriter with a knack for sharp hooks and killer ear candy. Heads up, Pearl Jam fans: Eddie Vedder makes a cool cameo on "Constellations."