The list below was born out of some pretty serious arguments. Was Bruce Springsteen better in 1975 or 1978? When did Kanye hit his stride? Which was more awesome, "The Joshua Tree" or "Zoo TV"? The concerts and tours that made the final cut weren't just huge spectacles, they deepened the power of rock & roll itself – from Neil Young thrashing out 20-minute jams with Crazy Horse to Beyoncé turning stadium glitz into a personal outpouring. "You're almost levitating on the energy from the audience," says Keith Richards. "And I miss it when I'm not doing it." Here are the people who've done it best.