Horton Hears a Who! enjoyed a weekend opening at the box office that was as big as the elephant at the center of the tale itself. According to final figures, the G-rated movie took in just over $45 million, making it the biggest opening for any film this year. As Dr.-Seuss-s tories-turned-into-movies go, Horton beat The Cat in the Hat but not How the Grinch Stole Christmas. Among other opening films, Never Back Down produced a so-so $8.6 million. The film was produced for only $20 million. But anoth er action flick, Doomsday, lived up to its name with a weekend tally of $4.9 million. Meanwhile, last weekend's winner, 10,000 B.C., headed for a fast extinction as it dropped 53 percent to $16.8 million.

The top ten films over the weekend, according to final figures compiled by Media by Numbers (figures in parentheses represent total gross to date):
1. Horton Hears a Who!, 20th Century Fox, $45,012,998, (New); 2. 10,000 B.C. Warner Bros., $16,773,312, 2 Wks. ($61,577,423); 3. Never Back Down, Summit Entertainment, $8,603,195, (New); 4. College Road Trip, Disney, $7,810,400, 2 Wks. ($24,203,543); 5. Vantage Point, Sony/Columbia, $5,462,747, 4 Wks. ($59,263,128); 6. The Bank Job, Pro, New Line, $3,043,162, 3 Wks. ($29,809,714); 7. Doomsday, Universal, $4,926,565, (New); 8. Semi-Pro, New Line, $3,043,162, 3 Wks., ($29,809,714; 9. The Other Boleyn Girl, Sony/Columbia, $2,882,846, 3 Wks. ($19,153,729); 10. The Spiderwick Chronicles, Paramount, $2,335,238, 5 Wks. ($65,376,031).