The Best of NOW That's What I Call Music! 10th Anniversary is a spinoff album in the US NOW That's What I Call Music! series. It was released on November 11, 2008, and it is the first anniversary record to be released. This album celebrates 10 years of NOW That's What I Call Music!. The Best of NOW! 10th Anniversary includes ten Billboard Hot 100 number ones: "I Kissed A Girl", "Umbrella", "Stronger", "SexyBack", "Lollipop", "I'm Real", "Hips Don't Lie", "We Belong Together", "Fallin'" & "How You Remind Me".
The Best of Now That's What I Call Music! 10th Anniversary