Weekend Box Office: 'Iron Man 2' bags $133.6 million

"Iron Man 2" blasted his way to the top of the weekend box office, raking in an estimated $133.6 million in its first three days out, according to estimates by Exhibitor Relations.

Although this wasn't enough to usurp "The Dark Knight's" throne for biggest opening weekend, it's still an auspicious start to the summer movie season.

Worldwide, "Iron Man 2" -- which stars Robert Downey, Jr., Gwyneth Paltrow, Mickey Rourke, Scarlett Johansson and Sam Rockwell -- has earned $273.6 million.

Another notable opener is the Focus Features documentary "Babies," which not only starred real-life adorable babies, but was also wise to open on Mother's Day weekend. Although "Babies" only opened on about 500 screens (as compared to "Iron Man 2's" 4,000+ screens), it had taken in a higher per-screen average than No. 2 finisher "A Nightmare on Elm Street" and broke into the Top 10.

Here's the full three-day earnings from the Top 10 films over the weekend:

1. "Iron Man 2," $133.6 million

2. "A Nightmare on Elm Street," $9.2 million

3. "How to Train Your Dragon," $6.8 million

4. "Date Night," $5.3 million

5. "The Back-up Plan," $4.3 million

6. "Furry Vengeance," $4 million

7. "Clash of the Titans," $2.3 million

8. "Death at a Funeral," $2.1 million

9. "The Losers," $1.8 million

10. "Babies," $1.6 million

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Photo credit: Paramount