"I knew that we would have a great chemistry," Cooper told ET. "At least I thought we would based on Wedding Crashers, a movie I'd done with her 10 years ago. I always thought, 'Wow! It's so easy to work with her.' She's so present and it only got stronger after 10 years."
If nothing else, the movie gets an A for casting.
Cooper and McAdams lead a star-studded cast that includes Emma Stone, John Krasinski, Alec Baldwin, Danny McBride, Jay Baruchel and Bill Murray in this story of a military contractor (Cooper) who screws up a major deal and is forced to return to his old life in Hawaii to help with a U.S. Space mission.
There, he tries to reconnect with an old flame (McAdams) while at the same time begins to fall for a young, overly enthusiastic Air Force pilot (Stone) assigned to keep an eye on him.
"It's such a wonderful thing to come to work with Bradley every day, because he has so much passion for not just his character but the whole film -- the whole process," McAdams said. "He approaches every scene like he wants it to be the best scene filmed ever."
While McAdams sang Cooper's praises, Stone gushed over Crowe.