What Happens in Vegas (2008, USA) C-99m. SCOPE **½ D: Tom Vaughan. Starring Cameron Diaz, Ashton Kutcher, Rob Corddry, Lake Bell, Treat Williams, Queen Latifah, Dennis Farina. It doesn't get any more contrived than this: Two singles meet during a trip to Las Vegas, and marry for the heck of it. When on the next morning they find out that they don't really fit together, a $3 million win forces them to live their marriage for 6 months - including going to marriage counselling sessions! Sounds improbable but is good for a few laughs. Harmless entertainment.