U.S. users can score a free copy of Transformers (2007)
Australian users can snag The Fast and The Furious
Italians can score The Invention of Lying
And everyone else in other countries can check this link and look for the promotion message and hopefully will report back (with links!) to share what if anything they found waiting for them.
Oh yeah, U.S. users can also snag Coldplay's six studio album Ghost Stories for free. Everyone else might have to cough something up for it though, by which I mean money.
UPDATE! To see what Google services (Play Books, Movies, Music, Newsstand and potentially what items within each of those) are available in your respective countries please visit this link.