If Circuit City was Cronos, then Best Buy is the almighty Zeus, father-slayer and purveyor of bargain electronics to millions of cow-eyed worshippers, milling around searching for the next good deal. The Union Square location is, of course, more packed than most, with agile, determined locals combat-rolling around and vaulting over tourists ambling aimlessly with their sights set on everything but the ground in front of them.