4 Reasons Mamma Mia! Is the Ultimate Summer Movie

You're lying if you say you don't want to belt along with Meryl Streep, Julie Walters, and Christine Baranski during "Dancing Queen." ABBA's most iconic and infectious hits can make anyone want to sing and dance like nobody's watching. After all, who can resist catchy, sizzling songs and dazzling dance numbers? Each song is like an injection of fluffy happiness, leaving you with a big, goofy smile on your face.