It’s already been shooting for a while now, but Tom Cruise’s next international blockbuster Mission: Impossible 3 is still adding players to its main cast.

Angular actor Billy Crudup, who is mystifyingly not a major star, has joined the flick, currently being shot by Alias architect JJ Abrams.  It’s unknown whether Crudup will be an IMF agent or a villain, or if it’s a significant or minor role, since nobody even really knows what the movie’s about (and we probably still won’t after we see it if the previous films are any indication) other than it has Tom and his team (but mostly Tom) trying to stop Philip Seymour Hoffman, a task that apparently will take them to a number of exotic European locales.

Crudup is currently working with another ridiculously high-profile cast on The Good Shepherd (that one has Matt Damon, Robert DeNiro, Angelina Jolie and Alec Baldwin) before he’ll reunite with Lester Bangs and join Ving Rhames, Laurence Fishburne, Keri Russell, Jonathan Rhys Meyers, Michelle Monaghan and Maggie Q on the list of people whose presence will be suppressed by the exaggerated heroics of Cruise.

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