Just got back from the cinema after watching my first-ever proper 3D movie - Ice Age 3. Absolutely astounding visuals...it really does feel like you can reach into the screen and touch the characters. (And sometimes the characters are reaching out of the screen to touch you!) I was making a tit of myself the first 10 minutes by continually going "Wow" out loud at the spectacle.
The film's pretty damn funny in parts too - Simon Pegg's turn as Buck The Weasel a particular highlight.
Definitely recommended...and pay the extra few quid for the 3D screening...it's worth every penny.