Alright.. I'll join the fun.
I started with Solaris 10 and actually still use it from time to time (have not tried the new release yet)
From there, I wanted to try the first Symphony release but it would not play nice with my equipment at all (have not tried their new release either)
I used Saxen OS for a bit on an older HP Pavilion and liked that a lot... (The new Saxen release looks really nice but again, have not tried it but plan to)
Then... I tried Kubuntu and could not get it to work back then, so moved onto Fedora and stuck there a bit.
Next came ZenWalk, which I loved but was now bitten by the bug and hooked on the hop.
And I have tried just about all of em...
When I finally came across PCLinuxOS 2007... I liked everything about it, especially the fact it worked on my IBM T21 laptop and I just stuck to it, and then got involved with MyPCLinuxOS and helped resurect the EduLOS project (which we changed to PCLinux Edukator) but my partner suddenly vanished which was a real bummer (and he was the brains behind the whole project)
I took the helm of the Beautification Project because it seemed business would be great with all the projects on-going at the time. And I am also involved with the PELinuxOS (Producer Edition) which will hopefully be ready for beta soon.
I also use GRANULAR Linux as my main OS now, and am heavily involved with the graphics there and it's just a really great group of people. We currently have the same issue many have had with the newest kernel where it does not acknowledge sata drives (but some have managed to find a work-around for it) And our devs are working on it hard...
All in all... I'm mainly a KDE guy and I'm excited about the release of the 4.0 series but, truly hope they continue support for 3.5.9 because I know many people will want to stick with it for various reasons. Me too prob because I'm not a huge eye-candy guy when it comes to using an OS... I just want it to work, and need all my resources for graphics, multi-media work too much to waste on supporting all the stars & twinkles.
I have also been playing around with the Athene desktop and also love OpenBox and even AfterStep... I have tried just about all the window manager and DE's some are really cool to play with (like LXDE) but... few are really reasonably developed enough to consider using as a full-time set-up But, the guys who have worked so hard on a couple, like Sam-Linux with XFCE and TinyMe with OpenBox and the guys with PCFluxboxOS, deserve a huge applause because the strides they have made are huge in lines of customizing the environments... because it takes a lot of work.