There are really two kinds of applications that you might want to install on your handheld—productivity applications that help you do something better, and games that help you get through that two-hour layover at the airport. Personally, I like games, but I have to admit that the productivity applications do some pretty neat things. Besides, if you wanted a gaming system you would have bought a GameBoy Advanced and not a BlackBerry.
The following sections describe a few productivity applications that I find to be interesting and useful. They aren't in any particular order.