Bleeding Edge is now available for Ubuntu 12.04, this is  a shell script designed for Ubuntu 32 and 64bit. It installs repositories, keys, and software – such as Gimp2.8, adobe reader, dropbox, media players, codecs, MS fonts, drivers, etc with one click. It also cleans up the system.
1- Download the script
2- Open terminal, cd the folder where you downloaded the script and then make it executable
sudo chmod +x BleedingEdge12_4_8.sh
3- Run the script using the command:
sudo ./BleedingEdge12_4_8.sh
