Here's a new one I learned today:
The Multimedia Home's brightness is controlled by the brightness setting and not by the auto-brightness feature. Whatever brightness your setting is set to, your Multimedia Home will be that brightness.
This has been driving me nuts since moving to 2.0.1. It seemed like the brightness would auto-adjust, just as anywhere else in the phone, prior to the upgrade, but had not been doing so since.
If you want the brightness of the Multimedia Home to be the lowest setting, turn off auto-brightness, move the slider to the lowest setting and then turn on auto-brightness again. Pick a different setting for levels of brightness.