PDA's aren't my cup of tea, but I know more than a few people that can't go a day without them. Hardware Extreme has posted a PSA roundup which showcases 10 PalmOS-based personal digital assistants.
Basically, like an organizer but it not only handles your daily appointments, setting alarms or reminders as such, it also acts as a good company during your long waits at the queue for your next train or sharing a head wreaking puzzles with a friend. And now, there are even more functions integrated with it; playing great tunes, capturing pictures, and double up as a mobile phone too. The list will go on beyond your wildest imagination. Wow, simply exciting!More information @ Hardware Extreme