Never ascended, even though I've been playing since the days of Nethack Plus (there was a dearth of development at one point, so several variants came out... they all died off quickly except for SLASH.)
Closest I got was a priest who made it all the way to the entrance of Hell... only to realize that in the entire dungeon up to that point, no ring of fire resistance had ever been spawned, and I had used up the wand of wishing from the castle (the only one in the game period at that point, I think.) I went back and forth from dungeon level 1 to dungeon level 34 (IIRC - this was a LONG time ago) three times or so, hoping that someday the RNG would smile on me. That character went to the junkyard with the MFM encoded 20 MB hard drive he was on, still unable to go any further (entering Hell was an insta-kill without fire resistance.)
fwiffo wrote:Bones are hilarious. On alt.org I would leave prank bones lying around... Summon a demon prince in Minetown, leave chains lying conspicuously around (they look like altars), give a funny name to a monster that's about to kill me... "Go team Ant!"
Summoning Juuiblex in Minetown for other players to run across... you
are evil.

I second the vote that you should try Crawl - I've never gotten very far in it (I've only had three or four characters who lived long enough to see the Ecumenical Temple, although it's possible some just missed the entrance and kept going) but it's fun.
EVERYBODY who likes Roguelikes should try Dwarf Fortress -
http://www.bay12games.com/dwarves - it's a very ambitious project which aims at being a fantasy world simulator rather than a "game" per se. A new release just came out with a TON of new features - health care, including surgery, infections and bone setting; creatures are now made from material templates ("elven skin" can withstand temperatures up to x before it begins to melt. Its flashpoint is "y") which makes possible a number of nifty features. It also added some exciting bugs, but those are getting ironed out quickly.

First thing you do when you being playing is generate a new world - it runs through between 200 and 1050 (by default - these numbers can be changed) years of history before you begin playing, setting the ground by making civilizations, religions, and simulating wars, theft, etc. Then you can look at the history written so far in Legends Mode (in the year 874 the dwarven outpost of Craftsmithed was attacked by humans from the kingdom of Armorplated [these names are made up by me on the spur, but that's basically the way the game generates them]) or actually play the game in Adventure Mode (roguelike; make a character, meet powerful and influential people, get quests, get killed) or Dwarf Fortress Mode (make a new outpost from one of the dwarven civs. You start with a band of 7, but as you prosper through surviving attacks from goblinkind [or whoever your civ is at war with] and creating trade goods from the valuable ores and stones you mine from the earth, your fame spreads and you attracts migrants. But you also attract the attention of the powerful beasts who roam the land...)
Also, after your fortress delves too greedily and too deep, or succumbs to siege, or otherwise crumbles to ruin (don't feel bad, they all do eventually...) your adventurers can visit the shadowed halls, and if you look in Legends Mode you'll see that your forts (and also your adventurers) influence the living history of the world, with the artifacts and masterful pieces of artwork your dwarfs create being noted alongside the epic battles and struggles between nations.
Dwarf Fortress aside (go try it, now!) does anyone remember Omega?