Well, judging by this weekend's box office receipts, there's little doubt about what women want — Mel Gibson. The Aussie's romantic comedy, What Women Want, debuted at No. 1 with an estimated $34.4 million — the biggest December opening in history and a personal best for Gibson. The new teen comedy, Dude, Where's My Car?, surprised naysayers by claiming the No. 2 spot with $14.0 million, just ahead of Dr. Seuss' How the Grinch Stole Christmas, which slipped to No. 3 after spending four weekends at the top. The Jim Carrey holiday blockbuster raked in another $13.0 million, bringing its 31-day haul to $212.9 million. Disney's latest animated entry, The Emperor's New Groove, opened at No. 4 with a disappointing $10.0 million gross. Vertical Limit rounded at the top five with $9 million.