America had never seen anything like Elvis Presley when he burst onto the scene in the mid-1950s. His dance moves were so sexually suggestive that he was filmed from the hips up during his debut appearance on the Tonight Show. If anything, the censorship made him even more irresistible to teenagers across the country. Everyone wondered what exactly was going on underneath that camera. Nationwide mania for Elvis lasted until he joined the army in 1958, but it peaked in 1956 when he scored Number One singles with "Heartbreak Hotel," "Don't Be Cruel," "Hound Dog" and "Love Me Tender." Regardless of how badly he squandered his gift in the 1960s and 1970s, the image of Elvis gyrating his pelvis on national TV is permanently planted in the memories of an entire generation. Countless artists decided to devote themselves to rock & roll in that very moment.