When it comes to celebrity memorabilia, nothing seems out of bounds: In March, a lock of Justin Bieber's hair fetched $40,668 on eBay. "Some people desire to have a personal link, however absurd, with power and fame and something glorious and glamorous," says Temple religion professor Lucy Bregman. "It's a form of magical thinking, something human beings are never likely to outgrow." Veneration of relics exists in all religions, says Bregman. "[Christians] believed that the martyrs' bodies were tainted with a kind of sacred power that could connect them with God," said Bregman.