Decim8
I think I've fallen in love. With Decim8. As everybody is applying retro or vintage effects to images, this handy little app decimates them. Yeop—it destroys them. It makes your images look like a "corrupt JPEG on a dying hard drive".
If you are a fan of streamlined pop music, get a Hipstamatic. If you get inspired from Throbbing Gristle (video above), Frontline Assembly or Trent Reznor, get Decim8.