I got Bastion from Pev during the sale (thanks again!) and I played it pretty much almost from beginning to end in a day or two - what a game. I used a controller (Xbox) to play it since it was originally a console game anyway, and I think that helped to get the game's fullest awesomeness out.
Basically, the art, the world building, but mostly the narrator and the music are amazing! The narrator doesn't just, well, narrate, he actually comments on almost everything you do in-game. Depending on your actions he'll throw out different lines. For example, when you fall off a skybridge, he'll say something like "the kid almost falls to his death and remembers to be careful" or when you use a particular combination of weapons, he'll have a line for that, etc. etc. You gotta play the game to really appreciate the system, not to mention the stellar voice work by the actor playing the narrator.
The ending of the game is genuinely touching, and the game offers a lot of replay value for people who like to hunt for challenges and completion. That's not really my kind of thing, but I may replay the game anyway for kicks, we'll see.
For Pev: