Mill Avenue is the heart of downtown Tempe, and there's no better place to see the pulse of living than this urban strip. Arizona State University brings college kids in proximity, but it's also a popular spot for cruising and hanging out. The voyeur within us likes to sit back and watch the eclectic mix of teens, the young hippies selling hemp products with their dogs, punks with dyed hair spiked with egg whites, motorcycle gangs gawking at each other's crotch rockets, and even suburban families who have stumbled onto the scene. With such an array of characters, it is like watching a Fellini movie. Now that's what we call entertainment, and it's free.