#1
Saw this video last night and it blew me away.

http://www.youtube.com/watch?v=lf3kG-tLUG0

Granted a lot of the sounds are gained through various pedals and what not but what interested me the most was perhaps the bit right at the beginning. The simple act of just hitting the input jack can poduce such an interesting sound from such a simple thing, something id never have thought of.

So what other strange techniques and tricks have people used to get interesting and un-guitar like sounds from their guitars?