So I don't know if there's a thread for actual tabletop games (not RPGs, although those are cool too)... have you got any that you break out when the electricity is down and your game systems don't work?
My girlfriend went to the local comic store and came home with a copy of the card game "Gloom" which is absolutely awesome. Each player picks a family of five, and the point of the game is to make them as miserable as possible (by playing cards that have terrible occurances on them) before killing them off. Once all the members of one family are dead, the game is over and all the miserability points are added up. You get to play happy things like "Lord Bassington Bassington was taken out for pancakes and won a bunch of money," or whatever on your opponent's characters to reduce their miserability points...
Another good one is the card game Give Me The Brain, where you're zombies who work at a fast food restaurant and have to perform a number of chores (your hand) before they can leave for the day (win the game). The problem is that there is only one brain to go between all the players. While some jobs are just gruntwork and don't require any thinking at all, other jobs require The Brain... but everyone's trying to get it away from you and you may DROP IT AT ANY TIME! Also lots of fun.
And then there's Kill Doctor Lucky, which used to be $7.00 for the Director's Cut edition but then they made it into a CLUE-like full game with a box and colored cards and an actual gameboard and everything. It's made by Cheapass Games and is pretty much a Pre-CLUE: all the players have a grudge against Doctor Lucky and have to kill him in his mansion with a variety of weapons.
Last but not least on my game rave is Settlers of Catan, which if you haven't played you have to shell out the $20 and at least get the travel-sized version. One of my friends went and got the $200 sculpted landscape and three-dimensional city edition in a wooden treasure chest, but I'm not quite that into it. German game, and the Germans rock. You're a settler baron guy and you have to build roads and towns and you can make sheep into bricks!
Other ones I've played and liked are Apples to Apples, Ticket to Ride, Get Out, and Save Doctor Lucky... How bout you guys? I am always on the lookout for good games.