I remember checking out the AD&D Dungeon Master's Guide from the library when I was a wee one and photocopying some of the pages. I've been playing RPGs ever since. :) Most of my experience is as a DM/ST. I've run D&D 2nd Edition and 3.0/3.5, as well as most of the oWoD lines. I'm currently interest in OSR stuff, having chosen Basic Fantasy as my 'poison.'