I just finished playing Machinarium, and it is probably the most beautiful game I've ever played - on par with the beauty of Myst. But different, beacause Machinarium is not in 3D, rather, the world you explore is all painted by hand. And the Music! so beautiful as well. there is a free demo at http://machinarium.net/demo/. And the game is only $20. To be honest, after I finished playing, I felt like giving them another $20. this game is so unique and well built, so much love and care went into creating it. so many little details that are surprising. the only small downside is that sometimes you can get stuck, so I used online walk throughs a few times. this game is a hidden treasure. (There are versions for Mac, Windows and Linux, and it runs superb on the Mac)
+1. You can really tell a lot of love was put into this game.