Huge fan of like 90% of Knizia's stuff (if you don't know Reiner Knizia, you don't REALLY play boardgames

), in particular I love Ra, Amun Re and Lost Cities. I'm also a huge fan of Puerto Rico and Settlers of Catan, of course two of the biggest classics. Thunderstone is a great game as well, in my opinion if you like Dominion but wish it had a slightly better theme and more interaction, you'll love Thunderstone. I actually really dislike Dominion, but that's more because I had a bad experience with it: I was playing with all experienced players, and before I could even determine what my cards did, it was my turn again. I felt rushed, annoyed, and unable to appreciate any of the nuances of the game. I see why it has a following, and where it can fit in for a regular gaming group, but I am not a fan.
For a more gamble-y type game, I highly recommend Can't Stop. It's about as elegant as you can get, and the game is damned exciting if you find that sort of thing exciting. It's all about risk/reward and pushing your dice rolls to the limit.
My newest game acquisition was Battles of Westeros (or FOR Westeros, I forget and am too lazy to check), which is a BattleLore inspired game based on the Game of Thrones universe. I had a disappointing first game, but it was in part because my opponent, who was much more familiar with BattleCry, gave up his commanders far more easily than should have happened, and I ended up wiping the board with him. Also played recently were 6 Nimmt and Age of Steam.
EDIT: hehehe, post 1414