Jonathan Rhys Meyers is the latest thesp to join the cast of the J.J. Abrams-helmed Mission: Impossible 3, per The Hollywood Reporter. The actor, who recently channeled the King in CBS' Elvis miniseries, will play a member of Tom Cruise's posse. (Speaking of J.J., yo, dude, last night's Alias climax was not cool. Those were brand-new boxers I was wearing!)