Since I linked to one artsy indie game the other week (Today I Die, which got the sort of media coverage and reviews I can only dream of, not that I'm jealous or anything), I thought I'd add another.
Simple puzzle-based game. Completely charming. And, like Today I Die, it's hard to see that it's a puzzle game just from looking at the initial screen.
Windosill is $3, which strikes me as kind of a "Why even bother?" price. But it is awesome to see clever people doing their own thing and still coming out with something actually fun.
Oh, and heck, if you haven't already, play Samorost.