I found this a couple of months ago and was entranced by it. I like Tim Hecker quite a bit, and giving him guitar feedback to twist and contort is a lot of fun to listen to. I've come back to this video many times over the past few months.
I haven't seen the documentary that this is apparently a part of. I should probably remedy that at some point.
Yep, this was awesome.
I thought you might enjoy this.