I was idly tootling around Wikipedia tonight. I started reading about a person and then clicked on a link about another person in the article and so on until I was nowhere near where I started. It’s amazing where you can end up. Just don’t click on Kevin Bacon. If you do that’s game over and you can never play again. And starting on Kevin Bacon is cheating.
If you’re not sure where to start, you can use this handy little tool to generate random Wikipedia pages until you find one you like the look of.