Off-beat road-trip comedy Little Miss Sunshine, mob drama The Departed and actor-writer Steve Carell were among the winners at the Writers Guild of America Awards on Sunday.

Debut scriptwriter Michael Arndt won in the best original screenplay category for Little Miss Sunshine, the Sundance Festival hit and ensemble film about a family's mishap-laden trip to a children's beauty pageant.

Abigail Breslin (left), Toni Collette and Steve Carell in a scene from Little Miss Sunshine. Abigail Breslin (left), Toni Collette and Steve Carell in a scene from Little Miss Sunshine.
(Twentieth Century Fox)

Martin Scorsese's The Departed, which is based on the 2002 Hong Kong action thriller Infernal Affairs, scored screenwriter William Monahan the WGA's adapted screenplay prize.

The guild presented its documentary screenplay award to writer and filmmaker Amy Berg for Deliver Us From Evil, which weaves the stories of sexual abuse victims together with interviews with the Roman Catholic priest who abused them.

Carell, one of the co-stars of Little Miss Sunshine, earned two WGA honours for his work on TV's The Office. He won one trophy (best episodic comedy) for penning the "Casino Night" episode and also shared in the show's overall win in the category of best television comedy series writing.

Other television winners included perennial favourite The Sopranos, which won best dramatic TV series writing, and the scribes behind acclaimed newcomer Ugly Betty, who won for best new series.

Other winners included:

  • Episodic drama: Mark V. Olsen and Will Scheffer, pilot episode of polygamy portrait Big Love.
  • Long form writing, original: Nevin Schreiner, television film Flight 93.
  • Comedy/variety series writing: The writing team from Saturday Night Live.
  • Animation: John Frink, "The Italian Bob" episode of The Simpsons.
  • News, regularly scheduled: Jeffrey Veatch, ABC's World News This Week.
  • News, analysis, feature or commentary: Stu Chamberlain, ABC's America's Heroes: Triumph and Inspiration.

The guild announced its film, television and radio winners during ceremonies on both the East and West Coast on Sunday: one in New York and another in Los Angeles.