Spotted any mistakes in the movie?

rotoscoped means that they film live action footage, then they playback this footage frame for frame and trace over the top of this in the desired animation style. it has proven a useful technique when trying to animate something that would just be near impossible to hand draw, or either to give something a very realistic quality while still retaining the animation look.

a couple of movies that have been rotoscoped (either fully or in parts)

- snow white and the seven dwarves (the dance scene where snow white is dancing with the dwarfs). snow white was rotoscoped here so she would look more believable dancing against the cartoony dwarves (it also proved to be a relatively cheap method of producing animation... hence in a couple of earlier disney films they used this technique, such as 'cinderella' and 'sleeping beauty'... usually for dance sequences)

- waking life (a movie completely and deliberately rotoscoped to give a sense of reality to an otherwise bizarre and trippy animation)

- a scanner darkly (this one is more obviously 'traced', but making it in the particular style that it is, made it an extremely painstaking and expensive process. the end result is very unsettlingly weird!)

anyhoo, a very long winded response... i hope it helped! i shall have to look out for that helicopter part in the snowman (though I don't understand why they'd rotoscope in the helicopter, seems pointless??)

something I noticed for the first time tonight - during the flying scene when they're joined by tthe other snowmen, one of the snowmen appears to be flying with no head.

There are trees where Santa lives, so it can't be the north pole. But where is it then? Are there trees on Iceland? I don't think so. It must be in one of the nordic countries or thereabout. But there's no penguins there either. Maybe southern part of Argentina or Chile? Who knows...

"I've seen things you people wouldn't believe..." - Roy Batty, Blade Runner