I was in my teens when I got my biggest one, a 400V DC one, from a camera flash capacitor. I knew there was high voltage in there, the remains of a disposable camera, and wanted to get it out and see if I could make tiny arcs with it, but hadn't given the cap time to discharge before I got out the pointy screwdriver to pry open the casing. The thing that gave me the real surprise was that I got the shock while holding the camera's PCB from the sides (must have been copper right to the edges escaping from under soldermask), rather than just the obvious metallic soldered bits which I thought, at the time, to be the only conductors that the cap would be able to energise. Paralysed a whole arm for about a second, then there were quite a few minutes to hours with the hand and forearm feeeling somewhat unnatural.
It seems capacitors are the pretty common theme on this thread, including being shocked by them even when you knew they were there. after my shock I learnt enough to tear down disposable cameras and get the high voltage bit I wanted whilst knowing how to get rid of the big electrolytic before bringing the hands anywhere near it, so I could get the high voltage I wanted to try things with but at the low current I knew couldn't be too nasty. Less memorable, more amusing, shocks followed, some entirely deliberately self inflicted, once I had 400V dc at negligible current directly from the camera circuits' step-up transformer output.
Also: this might be controversial, but a little bit of a dictionary definitions argument comes up here. I didn't follow the link to the article, but the 11KV shock in wolverhampton, well if the man was "electrocuted" how does he then go on to give a past-tense quote about his experience. I had always worked under the definition that if anybody, however severely injured, can ever report about what it was like, it was an electric shock (or electrical burn...). To call something an electrocution, is it not the case that the person undergoing it, by definition, does not live to tell the tale?