Christina Aguilera performed a medley of Whitney Houston songs at Sunday Night's American Music Awards. The performance was in honor of the 25th anniversary of Houston's movie "The Bodyguard." Aguilera sang "I Will Always Love You," "I Have Nothing," and "Run to You," among other hits. After her performance, Aguilera said, "I've had the time of my life, and I hope I did you proud, Whitney. Love you forever."