In a shock move Irish actor Liam Neeson has been replaced in 'Hangover 2' because he is unable to do reshoots as he is currently shooting 'Clash of the Titans 2'.

Neeson was originally brought into the movie after cast members demanded that Mel Gibson who originally got the cameo role be replaced.

Now Neeson's part will be cut as well and he will be replaced by Nick Casavettes, well known director and actor who often stars on 'Entourage' the HBO hit series.

The replacement of Neeson will hit the film's prospects. He has had 3 No 1. box office hits in the last 12 months.