Over processing usually leaves you with audio that lacks it original luster, or perhaps it starts to sound like the processor itself. However, sometimes you might end up with something interesting as a result of pushing the processing beyond the normal boundaries. While listening to the garbled piano in the last entry I could hear something haunting about the passage, so I decided that I would try to bring out those haunting characteristics by adding some unrestrained processing to the recording. I started by reversing it and pitching it down a couple of semitones. This brought out a brief harmonic minor melody. Later, after applying some extreme filtering and massive reverb I ended up with this thin, distant, and haunting sequence.
Mangled, Reversed, Distant, and Filtered Piano
I top and tailed this clip of ambiance from a popular lunch spot in downtown Minneapolis, applying quick fades in the beginning and end of the twenty four second example. I also applied normalization to boost the levels. 
A couple of weeks ago, while working in the studio with Nils Westdal, we decided to experiment with an old amplifier that has a built in spring reverb. We plugged the direct out into a firewire interface and hit the record button in the software. Nothing was plugged into the amp, but by turning up the reverb knob all the way and the volume most of the way up, the spring reverb became very sensitive to vibrations. All that was left to do was to bang the amp around a bit while capturing the output. 
I recently recorded the sound of Caribbean surf and the gurgling of the waves as they receded from tide pools on a beach near Playa del Carmen in Quintana Roo, Mexico. I did my best to shield the wind from the mic, but the cheap foam wind screen I brought with me was painfully inadequate.