I enjoyed the casting. I was concerned about Krasinski, as I have trouble getting past the "Jim" thing, but I think he does a good job at distinguishing his characters - at least as much as someone as distinct looking as he is can. I don't necessarily think he has "typical action star" painted on him, but considering the character, that actually works well for me. I also really enjoyed Pierce as Greer and loved Cornish as Cathy. I though Pierce and Krasinski had great chemistry. With Cornish, I was thrilled to see an age-appropriate woman playing a love interest.. and as an added bonus, she didn't look like she was dying of malnutrition.