I still don't really understand why most people consider Journey an indie game. It was published by Sony. I thought the word "indie" itself was meant to be short for "independent," as in "independently funded/published."
As for the OT, I'm still messing around with indie games. I haven't played a whole lot. Super Meat Boy is pretty good, Castle Crashers is fun (both on Steam). Mutant Mudds is my favorite of the ones I've played on my 3DS.