I have heard of Penumbra and played both of the demos. I'm actually making a horror FPS myself:
http://vimeo.com/4439668
I'm curious of how you guys started (2 people if I remember). Can you talk about your "indie-ness". How did you go about getting art? Were you self-funded or did a publisher start to help funding? Are you making more than an average game programmer upon the success of your games? How did you go about getting a publisher (simple demo/pitch, how many publishers)? Do you know of a list of indie publishers other than your previous ones?
Thanks guys, I'll probably play the games at some point to get some more ideas/inspiration myself. I was a fan of Resident Evil/FEAR so thats where my game is headed.