After months of breathless buzz, speculation, and doubt, James Cameron's "Avatar" finally arrived in movie theaters nationwide, and its box office prognosis definitely isn't blue.

The 3-D sci-fi epic landed at number one with an estimated $73 million, according to Hollywood.com Box Office.

The number is certainly on the lower end of expectations for the long-anticipated film, but considering that much of the east coast was buried under record snowfall for most of the weekend, it remains an unambiguously solid opening -- the best 3-D debut ever and the second-best December debut behind "I Am Legend."

Also unambiguous: The film's rock-solid "A" CinemaScore rating, which, along with the raves currently streaming across Twitter and inundating message boards, suggests it will grow long legs at the box office well into the new year. (It's no wonder that IMAX screenings of the film reportedly sold-out every single seat.) Worldwide, the picture's already banked an estimated $232.2 million.

The crappy weather appears to have suppressed all box-office totals, too. "The Princess and the Frog" hopped to second place with $12.2 million, a 50 percent drop from its wide debut last weekend, for $44.8 million total.

"The Blind Side" caught $10.0 million for third place. With $164.7 million total, it officially surpasses "The Proposal" as the highest grossing film for star Sandra Bullock.

Her old "Two Weeks Notice" co-star Hugh Grant, however, isn't sharing the same box-office fate; "Did You Hear About The Morgans?," his romcom with Sarah Jessica Parker, debuted at fourth place with a weak $7 million.


Other Oscar-bait films opened in very limited release to strong returns. Movie musical "Nine" high-stepped to a $61,750 per location average in four theaters; biopic "The Young Victoria" earned $7,400 per theater in 20 locations; and music-inflected drama "Crazy Heart" strummed up $21,050 per theater in four locations.

Overall, despite the blizzard, box office was up a whopping 58 percent from last year, when the Jim Carrey comedy "Yes Man" was tops.