
Machinarium Soundtrack - Tomáš Dvořák (2009)
A former co-worker played this one for me (thanks, Levi) and I loved it immediately. It made me buy the game, which was quite fun (although a little ironic because I usually play games with the tv on so i have the game sound turned off).
Dvořák (who has a bunch of similar small-game soundtracks under his own name and as Floex) provides some great music for the game, not musically remarkable except that it has such a great overarching mood in each track.
Electronics and keyboards mix with his clarinet and other instruments to make music by turns bopping, playful, and meditative.