For some reason, I continue to find the Simpsons as funny as I ever did.
And apparently, I am one of the only people who feels this way, and I am not just talking about this forum. Everyone I know in RL now likes Family Guy better, although they haven't given up on the Simpsons. I watch Family Guy a lot too, but I just like the Simpsons better.
For some reason, I never really got into Futurama, American Dad, or King of the Hill as much, although all three of those have (or had) their moments.