These guys out-grossed Kidman's flick?

LOS ANGELES -- "Superbad" was super good at the box office, proving that a no-name cast could hold its own amid A-list summer blockbusters.

Nicole Kidman and Daniel "007" Craig flopped with their "Body Snatchers" remake, "The Invasion," which grossed a paltry $6 million.

Sony's teen comedy, which followed the misadventures of two high school buddies trying to score booze, took in $31.2 million to debut as the weekend's No. 1 movie, according to studio estimates Sunday.

"Superbad" knocked off the previous weekend's top flick, New Line's "Rush Hour 3," which slipped to second place with $21.8 million, raising its total to $88.2 million.

The Warner Bros. sci-fi tale "The Invasion," starring Nicole Kidman and Daniel Craig in an update of "Invasion of the Body Snatchers," opened a weak No. 5 with $6 million.

"Superbad" maintains the pattern of producer Judd Apatow's earlier hits, "Knocked Up" and "The 40-Year-Old Virgin," which he directed. Apatow and his collaborators, including "Knocked Up" star and "Superbad" co-writer and co-star Seth Rogen, have a knack for packaging crude, R-rated humor with clever, authentic dialogue far smarter than what's normally seen in summer comedies.

Shot on a modest $20 million budget, "Superbad" had a slightly better debut than "Knocked Up," which opened in June with $30.7 million and went on become a $100 million hit.

1. "Superbad," $31.2 million

2. "Rush Hour 3," $21.8 million

3. "The Bourne Ultimatum," $19 million

4. "The Simpsons Movie," $6.7 million

5. "The Invasion," $6 million

6. "Stardust," $5.2 million

7. "Hairspray," $4.3 million

8. "Underdog," $3.6 million

9. "Harry Potter and the Order of the Phoenix," $3.54 million

10. "I Now Pronounce You Chuck and Larry," $3.5 million