15.CROWD PLEASER: Elvis flashes his half- smile, half-sneer at the crowd at New York's Nassau Coliseum in 1975. The mid-'70s represented a sharp decline for Elvis, though he continued to tour and even set a record when a concert in Pontiac, Mich., was attended by 62,500 people. Elvis's ongoing depression worsened when he turned 40 on Jan. 8, 1975; the star wouldn't leave his bedroom to celebrate with friends who had gathered. "To Elvis, Linda (Thompson) was beginning to express her true feelings for the first time, telling him tearfully that he was killing himself," Peter Guralnick wrote in his 1999 book, Careless Love: The Unmaking of Elvis Presley. "The Elvis she saw every day was a man suffering from severe depression, someone who was often barely able to get out of bed. What scared her most of all was that he seemed a willing partner in his self-immolation, a secret conspirator who simply didn't care."