Washington, DC: James Cameron's 3D sci-fi epic Avatar was the most pirated movie of 2010.
Avatar, which became the highest-grossing film of all time in 2010, was illegally downloaded from BitTorrent websites 16,580,000 times, according to the blog TorrentFreak.
That figure represents a 33% increase in downloads from last year's most pirated film, Star Trek, which had just under 11 million downloads, reports The Hollywood Reporter.
The superhero satire Kick Ass came second on the list with 11,400,000 downloads, despite making just $48 million at the box office compared to Avatar's $2.8 billion.
Inception, Shutter Island and Iron Man 2 rounded off the top five.