The blog ScriptShadow got hold of the first draft of Aaron Sorkin's Facebook movie. The verdict? The movie reads oddly mesmerizing, and has an unexpected hero: Sean Parker, an early investor in the social network.

As the co-founder of Napster, Parker (pictured) was overshadowed by Sean Fanning, who actually wrote the wildly-popular music-sharing software. Sorkin reportedly brings Parker to the fore, giving him credit for lighting a fire under Facebook founder Mark Zuckerberg and accelerating the company's growth.

ScriptShadow's Carson Reeves:

And don't get me started on Sean Parker - a character that can become

iconic if the film is made. The brash techy rock star revels in his own

ego, and is a key player in why Facebook is on our computers today

(Parker ended up selling his portion of the company for - I believe - a

couple hundred million dollars).

Zuckerberg, meanwhile, looks comparatively pathetic. In what Reeves calls a "heartbreaking scene," he sits alone ("not one true friend") in a dark room and "friends" the girl who dumped him right before he started Facebook. The movie nevertheless bops along as something of a comedy, thanks to Sorkin's "crazy unknown voodoo screenwriting tricks" and, apparently, jokes involving Facebook use.

Zuckerberg, whose flacks have been trashing the unreleased book on which Sorkin's script is based, may yet discover there are worse things than being depicted having sex in bathroom stalls.

(Pic: Sean Parker, by Andrew Mager)