Reitman found the kind of novel idea he was searching for in an original screenplay by Don Payne, a long time writer/co-executive producer of The Simpsons, wrote the script for My Super Ex-Girlfriend, and shook up the classic comedy template, where the boy falls for a girl who he later discovers is a superhero.

Taking the idea even further, Payne made his super-heroine neurotic, needy and clingy – any normal dude's nightmare – but add to that the concept of having to tell her ‘it's over', and what you have is the recipe for a hit comedy.

At first glance Jenny appears to be quite a catch. She's a vivacious, vibrant, and beautiful woman. But, as the movie progresses, it doesn't take long for the story's protagonist, Matt Saunders, to realise that there's something off with Jenny.

Reitman's challenge was to find an actress who could handle the character's stunt-heavy super-heroics and who had the requisite comedic skills. According to him, there was only one option: Uma Thurman.

Who better to play a haphazard boyfriend than comedian Luke Wilson? His character, Matt Saunders, soon realises that Jenny is too much, way too much, for a regular guy like him to handle.

But parents, don't worry, the movie is still PG-13 rated. “Our sense was that it would be terrific and painful,” says Reitman, who worked closely with Don Payne to find an original way, within the boundaries of their rating, to depict super-powered sex.

Jenny and Matt's first time involves a bed rocking back-and-forth against a wall; another amorous encounter finds Jenny and a near-hysterical Matt joining the Mile-High Club – minus the plane, of course.

Matt's growing awareness of Jenny's relentless neuroses has him realising he must break up with her. But hell hath no fury like a superwoman scorned, and Jenny wants revenge. Which is, naturally, when the fun starts.

Here's a little taste of what it's like to have a Superhero as an enemy. When Matt breaks up with Jenny, she smashes through his ceiling. Then, she hangs him off the Statue of Liberty, and wrecks his Mustang before putting it in perpetual orbit. And that's just the day he breaks the news to her.

Jenny is also determined to destroy Matt's burgeoning relationship with colleague Hannah (Anna Faris from the Scary Movie 1 to 4 fame). Hannah – coming off a less-than-satisfying relationship with a vacuous underwear model – and Matt share a deep friendship that quickly blossoms into passion, much to Jenny's dismay.

As the evil Professor likes to point out, he's just a regular man, with 10,000 times more money, intelligence and taste than the average person.

Indeed, Bedlam isn't your garden-variety super-baddie. His goal is to neutralise Jenny. He wants to permanently strip away her powers, so she'll be like any other run-of-the-mill, crazy ex-girlfriend.

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