I only learned about the Threshold filter last month from my friend at school, and as soon as I saw it, a million ideas flooded in my mind. I thought - and still - think it is super cool!
I don't really know how to use the filter properly, because sometimes the picture comes out really blurry and lame. I used Photoshop Elements 8 so I don't know if that effects the outcome.
Anyways yeah, this is just a concept not a final piece.