I still watch The Simpsons...mainly due to muscle memory that forces me to change the channel to Fox every Sunday night at 8. It's arguably the most influential television show of all time and is still going (not so) strong. It's easy to see its influence on today's cartoons like South Park and Family Guy that have all had their "SIMPSONS DID IT!" moments. But even a show that's been on TV for 21 years can't be fresh all the time, can it? Of course not. Here's a list of 6 times The Simpsons has ripped itself off.