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."