For years, discerning Windows users have relied on Tweak UI, a semi-official Microsoft program for system settings not available on the default desktop. Now, in the same tradition and with something of the same name, Ubuntu Tweak (UT) offers the same advantage to Ubuntu users.
Read it here
UT runs on Ubuntu 7.10 and 7.04, and is available as either a Debian package of 127KB or as source code. Since UT apparently searches for the distribution and version, it does not run on earlier versions, or — unlike many Ubuntu packages — on other distributions that use Debian packages.