Welcome to the forums.
If you instant message frequently, you may want to look into BeeJiveIM. There are a few other browsers you may be interested in, such as Opera Mina and the Bolt Browser (which is still in beta). A new app I installed and love is BuzzMe, which allows the phone to ring and vibrate simultaneously.
It all depends what you're looking for. Check the after market section of this forum for a lot of great applications.