Back To Where It All Began In "The Hangover: Part 3"

This year sees the release of the third and final installment of the much loved "Hangover" trilogy. In this film, the gang go back to where it all began.........LAS VEGAS!!! From what we see in the first trailer, this may be a bit of a darker film than the last two but we do know that shit goes down and it's going to be one hell of a ride for fans.
Check out the trailer here: http://www.youtube.com/watch?v=KLAkxSjs8ZY