Marvel star and Academy Award nominee Robert Downey Jr. is open to reprising the role of method actor Kirk Lazarus in a sequel to the 2008 action comedy hit, Tropic Thunder. So long as he can share some screen time with Tom Cruise. Speaking with ExtraTV, Downey Jr. is asked if, like Cruise, he would like to return for a Tropic Thunder 2, with the actor offering a promising reply...