Ubuntu Tweak will be adding a ‘reset’ button after features and options which can be readily reset.. 
This latest feature once again makes Ubuntu Tweak a must-have application – never again will daring to customize mean total bork-ification.
This latest feature is ready to try out now in the Ubuntu Tweak Unstable PPA and is available for Hardy through Maverick users.
- sudo add-apt-repository ppa:ubuntu-tweak-testing/ppa
- sudo apt-get update && sudo apt-get install ubuntu-tweak
Image: Ubuntu Tweak; TualatriX