Ultimate Stopwatch. Gorgeous looking analog stopwatch on the screen. Has countdown timers, lap timers, etc. etc.
Call Meter NG. Logs your data, SMS, and calls. Give it a billing start date and quota, and it will show the percentage of call time, SMS's left, and data used in your billing period.
Easyether. Tethers your laptop through the USB cable to wireless connect. This is the ''lite'' version. (To see if it works with your phone or not) You can buy the app for $10. After the trial is over, just won't connect to secure sites. (https: sites)