The latest game in the Angry Birds franchise is Angry Birds Rio. Rovio has now made Angry Birds Rio for Android available in the Android Market, and the best part is it's free.
The goal of Angry Birds Rio is a little different than other Angry Birds games. This time, the goal is to free imprisoned birds by knocking them out of their cages. This latest Angry Birds features two episodes for a total of 60 different levels, and there are several "hidden fruits" that you can discover as you play.
You can grab your copy in the Android Market.