SlidellMan

Seems like Simpsons suffered when Futurama was funniest, just like Family Guy began to suffer as American Dad got really good...I'm not even saying there's a connection, but doesn't it seem that way?

Overall I like them all though. Everything will have its ups and downs.

SP started to suffer from seasonal rot around 2001-2002. However, I did enjoy Good Times With Weapons with Trey Parker's fake Japanese singing. After that, however, it went downhill more spectacularly than Newgrounds did around 2012. I don't watch The Simpsons very often, but still watch old reruns and the Ullman-era shorts.