Ashton does his own stunts?

While Demi Moore is hitting the fancy party scene in NYC, her hubby Ashton Kutcher continues filming scenes for What Happens in Vegas, co-starring Cameron Diaz.

The story is about two people who, following a drunken night in Vegas, discover they've gotten married and one of them wins a "huge jackpot after playing the other's quarter. Craziness ensues and the couple falls in love as they try to "undermine each other and get their hands on the money."