Does anybody play Endless Ocean for Wii?
This is a game in which you're a diver and you dive in several famous dive spots around the world. The graphics are good enough to appreciate and there are hundreds of fish to encounter. Once you see a fish you like, simply swim up to it and hit a button to read a fact sheet for that particular fish. You can follow objetives (search for treasure, take pictures, and act as a guide to customers) or you can simply swim around and enjoy the ocean. You can even put together a large aquarium to enjoy at your liesure with fish you've encountered throughout the game.
Along with the stunning underwater environments, the soundtrack is as soothing as you can get. This is by far the most relaxing game (and only relaxing game I've seen) ever produced.
For anyone that enjoys saltwater fish and owns a Wii (there is also a dive in the Amazon), this game is a must. I usually enjoy shoot'em ups and blowing stuff up, but I find myself playing this game for hours without even noticing the time.