Samorost 2 is a point and click adventure about a man looking for his dog which was kidnapped by aliens.
The (sequel to the) predecessor of the wonderful Machinarium.
I found this (sadly Flash-based) adventure-game show a pretty fun story and great ambient. I was compelled to play it through in one go, which did not take a very long time.
I found it pretty refeshing and had fun playing it. But as a huge fan of adventure games, it does not reach as high on my list as some classic titles or Machinarium.