Kate Mara and Clark Gregg have joined Marvel's "
Iron Man 2," being directed by Jon Favreau and currently shooting in Manhattan Beach, Calif.
Gregg next appears in "(500) Days of Summer," being released July 17 by Fox Searchlight. Gregg, who stars opposite Julia Louis-Dreyfus on CBS' "The New Adventures of Old Christine," directed and co-wrote "Choke." He is repped by UTA and 3 Arts Entertainment.