According to my super-secret source within Paramount Pictures (by that I mean The Wrap), director Brad Bird and Tom Cruise are about to begin casting for the role of Ethan Hunt's protégé in Mission: Impossible 4. While nothing is definite, Keven Zegers, Christopher Egan and Anthony Mackie are all vying for the part, although they may be in the running for other roles, as well.
After the failure of Cruise's last film, Knight and Day, Paramount was anxious to hedge its bets by bringing in another prominent actor to help draw an audience. By that logic, I really don't see why the studio passed over Tyler Perry. Diary of a Mad Black Warlord or I Can Do Baghdad All My Myself would have killed, and no one would have cared about the bad acting or cheesy plot. (/Film)