Mamma Mia! The Movie
The delirious sight of Meryl Streep leading a river of multigenerational women singing "Dancing Queen" is one of the high points of Mamma Mia!, the musical built around the songs of the hugely popular pop group ABBA. The plot sets in motion when Sophie (Amanda Seyfried, Mean Girls), daughter of Donna (Streep), sends a letter to three men, inviting them to her wedding--because after reading her mother's diary, she suspects that one of them is her father.
