The meeting was two years ago, on a street in Hollywood: Pam Grier, queen of ultraviolent "blaxploitation" flicks in the '70s, ran into Quentin Tarantino, king of ultraviolent indie cinema in the '90s. The director, it turned out, was a big fan. He even had a poster of Grier's 1973 movie Coffy up on his office wall. THE BADDEST ONE-CHICK HIT-SQUAD THAT EVER HIT TOWN! boasts the poster, which sports an illustration of a shotgun-wielding Grier in low-riding stretch pants and a revelatory bikini top. "I got an idea," Tarantino told Grier. "I want to write something for you."
Tarantino was...