Okay, I don't intend to make a spoiler post but lemme just say that I totally, totally love it that I would love to see it again on the Silverscreen. If you've not seen it, I believe it's better to see it on the big screen.
I wonder when it will hit the movie theaters here but I'll wait as I'm sure it will be worth the wait. As for other countries, I've read on Wiki the ff release dates:
United Kingdom: April 29, 2009
Australia & New Zealand: April 30, 2009
United States & Canada: May 1, 2009