I've been watching a few cartoons from the days of my youth (i.e. the 1970s) and having a pretty good time doing so. But I've noticed that a lot of the Hanna-Barbera shows I missed as a kid are nothing but transparent variations on the original Scooby Doo show. Not that its a terrible thing to discover but it does kind of make digging into these old shows a little less fun. I can't help but imagine how much more I might like a particular episode if it was Shaggy and the gang running away from the disguised bad guys.
And, now that I think of it, my beloved Speed Buggy is a non-scary variation on the same concept. Damn!