I will make some of my work public.
The best candidate is one that will probably not appeal to anyone: my personal linux distro.
I have it, I use it all the time. It's not published yet, though, since it consists of a base CentOS + a lot of work.
So, I will try to make it systematic, call it an installer, and drop it on the unsuspecting audience.
Don't hold your breath, though.
Here are some of the features:
Server oriented. I use it for my clients' servers.
Qmail+courier+vpopmail+roundcube+spamassassin+clamav mail system.
Squid proxy+fwbuilder firewall
Smart for package management
KDE as a GUI. Accssible via FreeNX/secure VNC.
OpenVPN for simple VPN management.
Custom cherrypy-based admin tools
No SeLinux (sorry, it's a pain in the butt. Secure, but a pain).
Bacula for backups
Custom tool to back the whole disk to a bootable DVD (System Rescue DVD)
/etc in SVN+Trac (yes, really, and the admin tools force you to use it)
Probably djbdns for DNS.
All in all, it's a pretty ordinary CentOS-based thing, except that the switch to runit makes service management way simpler and regular ( you can do things like having a non-root user that can manage some services, yay!)
On the other hand, the cherrypy-based tools would probably need a bit of a rewrite, since some are pretty cruddy.
Mostly, I have been gathering these pieces over the last 6 years as I really don't like the way any of the Linux server distros are built.
I based it on CentOS because doing the whole distro by hand is way too much work.
I can probably show it around June, if I don't get too sidetracked. Hopefully, someone will read this list and tell me "but graxzst linux already does all that!" ;-)