By Stephen M. Silverman
Updated November 21, 2003 04:40 PM

In what’s being called possibly the most violent film not to receive a NC-17 rating, Quentin Tarantino’s first movie in six years, “Kill Bill — Vol. 1,” opened in first place at the weekend box office, the Associated Press reports.

The film, which stars Uma Thurman and pays tribute to Asian chop-socky movies, pulled in $22.7 million, according to studio estimates.

Last weekend’s top flick, the Jack Black comedy “The School of Rock,” slipped to second place, while the Coen Brothers’ homage to romantic screwball comedies, “Intolerable Cruelty,” with George Clooney and Catherine Zeta-Jones, debuted nicely but not all that powerfully at No. 3, not that far ahead of the family-oriented “Good Boy!”, featuring the voice of Matthew Broderick as a talking dog from outer space.

In limited release, Clint Eastwood’s Oscar contender, “Mystic River,” a grim drama with Sean Penn, Tim Robbins and Kevin Bacon, opened strongly, taking in $591,390 in 13 theaters for an impressive $45,492 average.

The critically hailed murder story will expand to additional theaters this week.

The weekend’s top 10, according to studio estimates, are as follows:

1. “Kill Bill — Vol. 1,” $22.7 million
2. “The School of Rock,” $15.4 million
3. “Intolerable Cruelty,” $13.1 million
4. “Good Boy!”, $13 million
5. “Out of Time,” $8.6 million
6. “House of the Dead,” $5.5 million
7. “The Rundown,” $5.3 million
8. “Under the Tuscan Sun,” $4.8 million
9. “Secondhand Lions,” $3.3 million
10. “Lost in Translation,” $2.9 million