The Conquest: Joy McNally (Cameron Diaz)

The Seduction Technique: This is an example of resourcefulness meeting opportunity, then becoming a thoroughly long-winded, and actually pretty nasty, route to true love.

As is so often the case, alcohol helps the initial union, but the drunken revellers take it a bit too far and end up married.

They decide to divorce and share his whopping slot-machine jackpot, but a judge forces them to stay married for six months (!?!), and before long their mutual loathing dissipates and they discover that they can bear each other, and they're rich. Truly touching.

Lessons Learned? It's impossible to believe that anyone could be edified by this: what happens in What Happens in Vegas, should stay in What Happens in Vegas.