courtesy of 20th Century Fox Ashton Kutcher as Jack and Cameron Diaz as Joy, a couple unhappily married after a fateful drunken night in “What Happens in Vegas.”

"What Happens in Vegas" exceeds any expectations of being just another predictable romantic comedy with A-list celebrities. This movie doesn't ride on Ashton Kutcher's good looks alone, but it provides lots of laughs and funny one-liners between Cameron Diaz and Kutcher's characters.

When Joy McNally (Diaz) gets dumped by her fiance, her best friend convinces her that Las Vegas is just what she needs. Around the same time, Jack Fuller (Kutcher) gets fired from his job, so he and his best friend also head for Las Vegas. After an awkward bathroom confrontation, the four of them discover that they have been booked in the same room, leading to a night of drunken debauchery that results in Joy and Jack swapping vows in a ceremony they don't remember the next morning.

The next day, after verbally assaulting one another, Jack drops a coin belonging to Joy in a slot machine she is playing and wins $3 million. Joy insists that she get half of the money because they are married. The two of them take their dispute to court, and the judge rules that they must live together for six months and attend couples therapy in order to prove that they have made a substantial effort as husband and wife, and then he will grant their divorce and divide their money in half.

While Jack is a sloppy bachelor who sits at home and plays Wii, Joy is an uptight workaholic who isn't happy with her job. The two of them learn from one another while they are forced into cohabitation and discover what they really want out of life and relationships.

The plot is somewhat predictable and very unrealistic, but as with most romantic comedies, the exaggerated storyline doesn't sink in until after the credits roll. However, the comedic scenes are what redeem it.

One stands out in particular: Joy is taking her time getting ready in the bathroom, and Jack can't wait any longer, so he resorts to peeing in the sink full of dishes, yelling over his shoulder that it's her night to wash dishes.

While the relationship between Jack and Joy seems a bit implausible at times, the sexual tension and genuine annoyance they show for one another is entertaining and realistic, making their relationship easier for viewers to relate to.

Diaz and Kutcher's characters are ones viewers have met before in other romantic comedies (think "The Break-Up" or "Just Married"): the attractive, successful girl who somehow ends up living with, marrying, or sleeping with the too-good-looking-for-his-own-good slacker, who miraculously turns out to be a sweet and charming guy by the end of the film.

It's easy for the audience to see why Joy could fall for Jack after she discovers that he's a Little League coach and a loving uncle, but it's never very clear as to how Jack could fall for Joy, who doesn't show much character development besides becoming more fun when she's drunk.

Overall, the film is funnier than expected for a romantic comedy, though it has more gross humor than corny romantic moments. If you don't mind sitting through romantic comedies, or if you like them, then "What Happens in Vegas" is definitely worth watching.

Acting: A-
Plot: C
Comedy: B+
Overall: B+