My family and I have also greatly enjoyed the Catan series, and in general I find the "German" games thoroughly enjoyable.
Settlers of Catan is a great game.
...and Spore looks amazing. I'm also waiting on Bioshock.
I come from a family of gamers so I grew up playing a lot of them. Especially card games. I'm an avid poker player. My grandmother started teaching me poker as a child and I've been playing ever since. I also love chess, though poker always comes first.
Another genre of games that I like is collectible card games. Magic: The Gathering, Legend of the Five Rings, and Battletech are three of my favorites.
As for video games, Alpha Centauri, Planescape: Torment, System Shock 2, Starcraft, and The Longest Journey probably round out my top five.