You didn't think that I could let this thread pass without commenting, did you?
I mean, a guy who goes on the 'net by (variously) Rodney and/or Yendor?
Originally got my start into serious long-term computer gaming with the granddaddy of 'em all in this genre, Rogue. After a couple years of hard-core playing of that (circa 1986), Moria was the new norm. I wasted entirely too much of my young life on that game -- but it also helped propel me into my current job.
Along with kobo-deluxe, Moria seriously helped pass many a dull evening spent in Friedrichsdorf, Germany. I think I still have the savefile from that character -- L47 mage, as I recall. About the only thing (aside from the Balrog) that he's scared of is the various [link|http://www.acronymfinder.com/af-query.asp?String=exact&Acronym=AMHD&Find=Find|AMHD]'s running around.