A full length trailer is out for The Hangover 2 and all it does is remind us that anyone who goes to see the Warner Bros R-rated comedy when it opens on May 27th must do so in the knowledge that they are paying to see what they could watch on DVD right now, labelled on their shelf as 'The Hangover (2009)'. You remember those sitcoms that would take a show abroad to Hawaii or somewhere, and would basically play out the same plot, with the same characters, as was featured back home but under a new setting? That's The Hangover 2. Or as I'm calling it... "The Hangover Goes To Thailand"...