Indie-games are often fun and different from the mainstream ones - some of the greatest games are/were indie-games.
So I thought I'd make a thread where we can share some fun indie-games we have found, and help each other discover new ones.
So, where's my first contribution:
http://www.humblebundle.com/
http://www.youtube.com/watch?v=ZaM6LHC_uXA&feature=player_embedded
It's pay what you like, but please don't abuse it.
I payed $10 as I'm rather poor and wanted to try it out first.
Only played Trine so far, but that alone is worth some cash.

So go on, share your thoughts and your own recommendations!
