Don't walk in to "The Caller" expecting any explosions or nudity, because you won't get it. (In fact I believe only one gunshot is used in the film).
Frank Langella and Elliot Gould, arguably two of Hollywood's most underrated, star in this sleeper thriller that follows Jimmy Stevens (Langella), an energy analyst who had recently sent out damaging information to his company via e-mail. He realizes that he will most likely be executed because of it and he has a Private Detective (Gould) follow him on what will most likely be his last days, the Detective unaware that the man who hired him and the man who he's tailing are the same.
I liked "The Caller", but it ran a bit slow. Langella and Gould have two of the most relaxing voices and demeanors on the planet (at least to me) so their many scenes of dialog were almost fascinating. But the lack of almost any action will probably ward off any Die Hard or Rambo fan. Use "Public Enemies" for an example; a fine film that may talk too much and not thrill enough.
The central theme of the film seems to be death, and it is represented very well in the flashbacks of Langella's character. He is a haunted man who is ready to meet his maker, and ready to end it by outing the company he works for. Langella and Gould are perfect for their roles.
"The Caller" is a very good film if you are in a thinking mood, but not if you are ready for any amount of action. Kudos to all involved!