Oh my, don't get me started:
The first two computer games I got for our first PC had and still have me hooked:
Civilization (every version there is

) and
X-Wing. I still dig out the latter about once a year and get some mission done I just couldn't figure out how to do when I last tried.
GTA, whenever I feel nasty
I used to play lots of Adventures:
Monkey Island, Day of the Tentacle (that one was really weird, in a very good way),
The Riddle of Master Lu, Sam & Max, Loom, Baphomet's Curse, Indiana Jones and the Fate of Atlantis, Simon the Sorcerer and I'm pretty sure that list is not complete
RPGs: The complete
Baldur's Gate saga,
Icewind Dale, DSA (it's German), hours and hours of
Morrowind...
MinesweeperCommandos or
Desperados if I'm feeling very patient.
And believe me, I could go on
Games that actually involve other people:
I absolutely love the
Settlers of Catan, not a lot of rules, but lots of strategic possibilities. I just got an historic expansion for this for my birthday and absolutely need to find someone to play it with.
Scrabble and
Trivial Pursuit, but entertainment really is hard. (Um, I'm supposed to know the drummer of a band I've never ever heard of before

)
Pen & Paper RPGAnd I'll just stop now
Edited to add:
DMW: I learned a good part of my English by playing computer games and reading Star Trek novels, so my vocabulary was a little strange, too. Just how often do you use "hostile vessel", "phase converter", "tachyon beam", "chain mail" and all the monster names I know in typical small talk
