I have added some new gimping to my ´creations´ page. Please have a look at them..
The ubuntu official fonts used can be installed in your ubuntu/deb by the following method.
Take a terminal window (Application>Accessories>Terminal);
Then write the command
sudo aptitude install ttf-ubuntu-title
hit enter, give the sudo password and you are done! (You can get the same using synaptic manager also).
Now you can see the ubuntu font which is used in the ubuntu logo, in your GIMP, Inkscape etc. This font was introduced by Canonical under LGPL for ubuntu rebranding easier.