Michael Cera and Shia LaBeouf

Prehistoric caveman or action hero? As our own Jenni Miller recently posted, David Fincher is in talks to direct The Social Network (AKA "The Facebook Movie"). Naturally enough, speculation has begun on who could play Facebook founder Mark Zuckerberg. CNET News was told by "an entertainment industry source" that Michael Cera and Shia LaBeouf are among the top choices.

But they're on the top of the list for just about any movie featuring a 20-something lead, aren't they? Would either one be suited for the role? The red hot LaBeouf would seem the more logical choice ... except that he's already set for Money Never Sleeps (AKA Wall Street 2) and has The Associate (based on John Grisham's latest best seller) in development. One's about the financial industry, the other takes place in the legal system; a third movie set in the business world in the next couple of years might prematurely age his star.

Cera might be the better choice. Even though Year One flopped, he was the second banana and doesn't seem to have suffered from the box office fallout. The upcoming Youth in Revolt and Scott Pilgrim vs. the World could cement his appeal, setting him up for a dramatic turn with a very talented director. I'm curious to see if he can expand beyond his usual shtick; at the same time, his comic chops could come in handy, depending on Aaron Sorkin's script.

Would you rather see Michael Cera or Shia LaBeouf as Facebook founder Mark Zuckerberg? If not them, then who?

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