If you have a family that thinks that life's a musical, there's a fabulous and kid-friendly activity that will have you all straining your vocal cords. Take them to the limits and let the kids go wild at the Mamma Mia!: The Sing-Along Edition, which opens in select theaters today. This special version of the movie lists the lyrics to each musical number on screen. And, there's no need to keep your tot's toes from tapping because dancing is encouraged, as is belting out ABBA songs. To see if the show is available in your area, click here.