Want your phone to go to full brightness automatically when plugged in? Try this.
This is an application that changes the screen brightness to a user defined setting on plugging in the charger, and to a different setting on unplugging the charger.
If that weren't enough, it also has an option for keeping the screen on (it won't timeout) when plugged in.
The configuration screen of this app does show a small ad, but no where else!!!