Amazing! I thought it would be daunting to get a glitch effect going in my game, but this shader made it insanely easy. Thanks so much for sharing your great work!
Side note - I was having an issue where sticking the shader code into my camera's Draw GUI event was somehow overriding all of my other Draw GUI events, but this was fixed once I moved it into the "Draw GUI Begin" event. Not entirely sure how this works (might be unique to my setup), but just in case it solves the issue for anyone else!