Here's a
random-URL generator. It's not really random, and relies on Google--it's like using one, two or three dictionary words and the 'I'm Feeling Lucky' button. So it's also good for finding
googlewhacks, for what that's worth. Here's another
random-URL generator. It adds .com to a random dictionary word. Perhaps you'd prefer
random numbers, or, from the same people, a
random bitmap. Hit 'reload' enough times and you'll get a treasure map. Where did I read that discussion about a library of every possible videotape?