There was another record-breaker at theaters this weekend, and it didn't involve men in bat suits.
Mamma Mia!, the ABBA-inspired film starring Meryl Streep, quietly enjoyed the strongest debut for a musical. If estimates hold, Mamma Mia!'s $27.6 million opening will squeak by Hairspray, which set the mark last year with $27.5 million.
It was all part of the busiest weekend ever as more than $258 million poured into the box office, Nielsen EDI reported. The old record was $218 million over the weekend of July 2, 2006.
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