What are some interesting, visible "payloads" from viruses? I've tried Googling, but I'm not getting any good specifics; more people worry about the software threats, and the few lists of viruses I have found are 1) huge and 2) full of technical stuff that I don't understand.
I'm not interested in the "OMG DELETED FILES!" stuff on its own, and would prefer to avoid the "OMG YOUR COMPUTAR MACHINE IS DEAD NOW!" stuff; I'm more into the things like "Your computer is now stoned," where there's an annoying and hard-to-get-rid-of disruption.