Superstar Katy Perry was given the opportunity of a lifetime when she performed a duet of "Firework" with Jodi DiPiazza at Comedy Central's Night Of Too Many Stars. You'd think it would be the other way around, but DiPiazza, 11, who lives with autism, absolutely floored the pop star. After belting the duet, Jodi threw her arms around Perry in a moment of pure, appreciative love—and brought a tearful crowd to its feet. Perry later tweeted: "I will never forget last night. It was the most important moment thus far of what I do."
NEXT GALLERY: Top 10 Most Inspiring Stars of 2012