Movie beasts from old-time Hollywood got a makeover as heroes and conquered the weekend box office. DreamWorks Animation's action comedy "Monsters vs. Aliens," which features creatures from 1950s flicks in a showdown with invading extraterrestrials, launched itself into the No. 1 spot with a $58.2 million debut, according to studio estimates Sunday.

Movie beasts from old-time Hollywood got a makeover as heroes and conquered the weekend box office.


DreamWorks Animation's action comedy "Monsters vs. Aliens," which features creatures from 1950s flicks in a showdown with invading extraterrestrials, launched itself into the No. 1 spot with a $58.2 million debut, according to studio estimates Sunday.


It was the biggest debut so far in 2009, topping the $55.2 million first weekend of "Watchmen" in early March.


Opening in second place was Lionsgate's ghost story "The Haunting in Connecticut" with $23 million in ticket sales.


The previous weekend's top movie, Summit Entertainment's apocalyptic thriller "Knowing," slipped to third with $14.7 million, raising its 10-day total to $46.2 million.