Mine is "Misery", as it is here. There are others with that name though (sigh), so it's specifically the one with the same avatar image as I am using on this site.
I'm always up for a chat, though I dont always remember to mark myself as "away" when Im not there. I'm generally on during the night, being mostly nocturnal.
As for the sorts of games I'm into.... I tend to avoid mainstream titles (not because I dont like "mainstream" or something, just because they tend to be games I genuinely dont like), and I mostly ignore the entire FPS genre, and wont play anything with too many cutscenes or too much focus on story. I like difficult games, so shmups and roguelikes and particularly murderous or complicated RPGs (like Avernum or Grimrock) are good examples of things that I like.
I'm also big into indie games, I like MMOs, and I'll often pick up quirky and interesting/unusual games as well.
As for actual multiplayer games, Dota 2 is one, though I'm still quite new to it. Mostly I do support role in that one. Awesomenauts and Airmech are others, though I havent had too much time with those yet (but I will! really loving that whole genre so far).
Other than that, and various MMOs, I tend to do mostly singleplayer stuff.