There was an article on Kotaku about the game Another world (also known as Out of this world in the US), programmed by Eric Chahi as a one-man-project. The article was accompanied by the following video, which is a full walkthrough:
All this made me think of another game Eric Chahi worked on: Heart of Darkness. I have it for PC somewhere at home but I can't get to it now. I think I never finished it, I played it for a bit but haven't seen the ending. Now I'm thinking I should find a copy for the PlayStation and play it again (since my PS3 can play PS1 games).
Eric Chahi is currently working on a new game called From Dust. It's coming out now (or soon) for Xbox360 and PC and a PS3 version will follow later, I believe. I saw a video of it and it looks interesting.