Voodoopigs said:
I don't know, how about the 3RD REICH! Yes, I'm pretty sure they ruined themselves with all their backstabbing and in-fighting.
Soviet Union's an even better example. They eventually collapsed under their own weight.
Otherwise, Michael Jackson. It's easier to pretend that he doesn't exist past 1995, so I can enjoy Beat It and Smooth Criminal to the fullest extent.