Check out this simple interface for glitching images for free online. Simply drop in an image, adjust some settings, and you'll have a glitched image you can save and use anywhere. Much easier than going into a text editor and glitching the image manually. I glitched my Facebook profile picture, and I'm pretty happy with the results. Great work Airtight Interactive!
Try it out: http://www.airtightinteractive.com/demos/js/imageglitcher/