Love it or hate it, Angry Birds is a massively popular game. Even if it may be a bit played out and past its prime, that doesn't make this any less entertaining: T-Mobile created a real-world, life-size Angry Birds Live game in Barcelona, controllable via an Android device. The results are cooler than you'd expect, and the short (1:40) video is worth a watch.
Certainly puts a smile on your face, doesn't it?
Update: Thanks to Brian for a link to the behind the scenes video: