Ticket to Ride is also pretty fantastic. I've played the (regular?) America version, but the one we got was the Europe edition. Both are excellent, and the rules are pretty much identical. Few minor changes on the Europe edition (makes it feel like they tried to improve on the earlier version, and it seems like they did a good job.) It's a game you can have real conversations over because everyone's game play is pretty independent, and each turn is very short. My housemates and I played it for the first time a reunion weekend with some friends from undergrad, and over that weekend I think I played the game five times. It was just a great game to play while interacting, while other games are much more attention dominating. DixIt for instance IS your interaction while you are playing it, but Ticket to Ride is just as involved as you want it to be. Stay focused on your train routes and it will be a quicker game, but if you get all into your discussions about educational reform while playing? The game should still only take about an hour.
Other games I've played once or twice but really liked are Bang, Metro, Citadels, Caylus, etc. Ones which are smaller (in price, size, time commitment, etc.) which we really like are IZZI (more of a puzzle than a board game), Tantrix, Set, Flux, Quiddler, Timeline-we have the "Diversity" version. I'll tell you a little about a few of them:
Set- It has its own sets of cards with patterns and symbols and it's a game of organization and quick thinking. I love it. Quick, smart, fun. Easy to learn and play without getting repetitive, and good for kids too.
How about all of you? What games have I missed? What games do you like?