Seth Rogen reported to play the Woz to Christian Bale's Jobs

The reports are somewhat scattered on the matter. The Wrap says Rogen is under consideration. Variety is calling it a done deal. And, The Hollywood Reporter is saying that Rogen hasn't officially signed on to the movie, and it actually isn't even clear if a formal offer has been made to Rogen. Overall though, it seems like Rogen is the top choice of the film's producers. If Rogen does sign on, he would be partnering with Christian Bale on screen. Bale recently signed on to the title role of Steve Jobs. There is also word that Jessica Chastain is being considered for the film, but it is unclear what role she would play. 

This biopic has been in the works for a while, and has had one major setback after Aaron Sorkin finished the script when the original director David Fincher was taken off of the project, and replaced with Slumdog Millionaire director Danny Boyle. Of course, ultimately even if Seth Rogen does take on the role of Woz, he may not have all that big a part in the movie, which has been rumored to be focused around three major Apple announcements, and depending on which product events are covered, Woz wouldn't be around for most. Rumor has it that Sorkin chose the original Mac, NeXT, and the iPod events, and has left out the iPhone completely. 

source: The Wrap, Variety & The Hollywood Reporter via The Verge