Although his career is divided sharply between the sugary boy-band confections of the '80s and the adult-contemporary fare of the '90s, there's no denying that ex-Wham member George Michael churns out captivating pop. Touring the US for the first time in 17 years, Michael hints that the affair is a best-of gig, but expect some new tunes from his second greatest-hits album, TwentyFive. File this one under "guilty pleasures," but if a recent television performance is any indication, Michael still puts on a seriously good show. You may be pleasantly surprised "before you go go."