A lot of us in the business have stories about, or have experienced firsthand, the effects and aftereffects of theft/recycling/borrowing/biting... whatever you want to call it.
I know personally of a famous supermodel who's face advertises a psychic hotline without her knowledge.
Often images used to "comp" a design (images never meant to go to press) are deemed an acceptable risk and become the original art.
Often art or images one assumes were forgotten are anything but.
This topic is for posting stories of lawsuits, threats, and misappropriation.