My first linux ever was a RedHat 5.1 I got with a "Starting with Linux" book..
Then I swiched to Suse 7.1 (the big 5 (?) CD and 1 DVD pack)..

Went on to Slackware 8->8.1->9->9.1->10->10.1->current..
With a custom 2.6.13 kernel at the moment (and some weird modules )

Sometimes I play with Knoppix and other Debian derivates..
Also had some fun with SLAX and GoblinX

At work I use Novell Suse Enterprise Linux 9
(not my thing realy.. but hey.. I don't make all the decisions)