Kevin James is the latest name being mentioned in the same breath as Frank or Francis. Twitch, who got the news from Playlist, report:

... there is a part in the film for Kevin James to play - in true Being John Malkovich style - Kevin James. He would appear as the star of a film within the film titled Obese City as well as appearing as a presenter at the Academy Awards. (Source)

Twitch also notes that this should be treated as speculation only.

The Frank or Francis summary I posted a week ago looks very legit indeed, by the way.