Russell (voiced by Jordan Nagai) and Carl Fredricksen (voiced by Edward Asner) in animation comedy family 'UP'

The quirky 3-D film, about a grumpy old man and a boy scout who become unlikely adventure partners, has already grossed over $187 million (£124.6 million) in America alone in less than a month.

That puts the picture in fifth place behind Ratatouille, Wall-E, The Incredibles and Finding Nemo.

Experts predict Up will easily sail past The Incredibles' $261.4 million (£174.2 million) U.S. box office haul before the end of its cinema run. But the movie is unlikely to reach Finding Nemo, which scored a whopping $339.7 million (£226.4 million) at the U.S. box office alone in 2003.

Source: WENN