It's a mighty ambitious gambit for a porno film to take on a mainstream film as cerebral and deeply satirical itself as Adaptation. But if any adult production company is up to the task, it's Vivid, and they have succeeded quite impressively with Dual Identity, the tale of identical twin porn screenwriters A.J. and Donald Barber (sound familiar?), who disagree on whether people are more interested in seeing all the T&A you can throw at them or compelling characters and storylines (we think we know the answer to that one but we won't get into a debate over it).

The ingenious thing about Dual Identity is how (in the fashion of Adaptation, natch) it gives you both, weaving the very porn clichés A.J. shuns and Donald embraces into the story as cheeky joke-within-the-joke plot points. For instance, when we first meet the Barbers, Donald goes off on a rant about how he doesn't want to write a porn movie "where the lead character has an alter ego and he fucks the red-hot pizza delivery girl." And what happens a few scenes later? Red-hot pizza delivery girl Tawny Roberts wanders into their kitchen, and A.J. fucks her. A hot scene it is, too, with Roberts luring him onto the countertop, where they pound uglies in positions – both of the vag and anal varieties ? that would make Olympic gymnasts cramp up.

Now if nobody but Vivid could pull this idea off, the even greater truth of the matter - by about tenfold - is that nobody but Evan Stone could play the dual role of the Barber brothers. Fresh off his win for Best Actor in a Video at this year's AVN Awards, Stone proves, again, that he quite simply is the most charismatic, versatile, plain ol' fun-to-watch porn actor in the industry. Not only does he make each brother distinct enough that it almost seems like there are two actors playing them (an illusion that's executed beautifully, we should note, by both Stone and director Bo Edwards), but he makes them each uniquely funny.

On the one hand, there's Donald's crass exuberance, exemplified by his impassioned explanation to A.J. of his script, Car Fuckers ("It's about people fucking … in cars!"). A.J., meanwhile, is more reservedly quirky, with his big safari hat and perpetual look of confusion. The comic high-note of the movie is his "moonkey" exchange with Katsumi (who incidentally proceeds to engage in a scorching threeway with Savanna Samson and Alec Metro - this being, after all, a fuck film).

Pre-noms to Bo Edwards for Director and Screenplay (with Tony G.) - Film; Samson, Katsumi and Metro for Best Threeway; the feature for Best Film and Best Sex Comedy; and the one and only Evan Stone for Best Actor - Film.