"Slumdog Millionaire" made a clean sweep of the major guilds tonight as Simon Beaufoy added another trophy to his collection at the Writers Guild of America Awards. Beaufoy beat out Eric Roth for “The Curious Case of Benjamin Button,” Jonathan and Christopher Nolan for “The Dark Knight,” John Patrick Shanley for “Doubt,” and Peter Morgan for “Frost/Nixon."
Ari Folman won the documentary category for "Waltz With Bashir," while "Milk"'s Dustin Lance Black, the only WGA original screenplay nominee also nominated for an Oscar, won in his category.
Black was also previously named the recipient of the Writers Guild of America West's 2009 Paul Selvin Award, which spotlights work that "embodies the spirit of constitutional rights and civil liberties" for his story chronicling the life and times of the late gay activist Harvey Milk.
Black beat out original screenplay competitors Joel & Ethan Coen for "Burn After Reading," Woody Allen for "Vicky Cristina Barcelona," Tom McCarthy for "The Visitor," and Robert Siegel for "The Wrestler."
Both category winners have gone to win Oscars on every occasion since 2003, when Robert Pulcini and Shari Springer Berman won a WGA award for their adapted screenplay "American Splendor" but lost at the Oscars to "The Lord of the Rings: The Return of the King."