Seacrest, Wonder, Usher, others praise Dick Clark

Dick Clark, who died earlier this year, was the subject of a special tribute at the American Music Awards, which he created 40 years ago.

Usher performs at the 40th Annual American Music Awards in Los Angeles on Nov. 18, 2012. (John Shearer/Invision/Associated Press)

Usher performs at the 40th Annual American Music Awards in Los Angeles on Nov. 18, 2012. (John Shearer/Invision/Associated Press)

More Photo Galleries

Happening Now