[ Thanks to kiterunner for this link.
]
“Bisigi themes has a special place in the hearts and minds of
long term Ubuntu users. I have been using Ubuntu for about 5 years
now and in my opinion, the first set of really professional looking
themes were introduced by Bisigi. And unlike many other theme packs
for Ubuntu, every single Bisigi theme was a wholesome deal,
included everything from wallpapers to icon themes. Bisigi themes
stable PPA for Ubuntu 11.04 has just been updated and now you can
install the full set of 15 Bisigi themes for Ubuntu Natty in just 3
steps. Read on.”