From Vanilla Ice and Sir Mix-a-Lot to Dr. Dre and the Clipse, there's a long tradition in hip-hop of celebrating the sheer joy of cruisin'. Call it rollin' or -- depending how you got your stroll -- grindin'. The tradition remains strong in the ATL. Every Friday or Saturday night, from downtown to Midtown, PEACHTREE STREET is bumper-to-bumper bumpin'. Can it be a nuisance? Sure. But the cruisin' does serve a purpose: Forget your local music store's listening station. This is the best place to hear the hottest, of-the-minute jams in the city as they blare from every window and boom from every crunk trunk.