One of my buddies worked in the accounting department at our state government. He needed to get a bunch of documents from another agency (like hundreds every month) to process claims. Well this other agency requires everyone to go through their website and download each document one at a time. They said it was to prevent abuse. For some reason they couldn't just send a batch of them to us, even a fellow state agency. So I made a scraper to download an entire month at a time. I figure it was a webforms site because it was filled with postbacks and viewstates which made it a bit of a pain, but the ridiculous thing was the CAPTCHA code:
<input name="actualSpoofValue" type="hidden" id="actualSpoofValue" value="TFU3P">
and TFU3P was the CAPTCHA code!