Just finished installing Gentoo on my second box and thought I would 
post my impression of it:

So far it is awesome.  I am really impressed and highly recommend it to 
anyone who only wants specific software compiled specifically for their 
system.  In a way, every Gentoo box is different and only contains the 
software you want. 

The forums they have are also excellent.  I have found answers to every 
issue I have had just by searching the forums. 

The Portage package system is amazing.  Just type 'emerge PACKAGENAME' 
and it calculates all dependencies, downloads relevant source into the 
main code tree on your system, compiles with your specific settings, and 
installs.   For example, 'emerge mozilla ' or 'emerge xfree' and 'emerge 
xmms'.

If you are interested go to www.gentoo.org and try it out.

I have definitely been converted.