As a die hard Family Guy fan I can say that the show back when it first aired was fantastic.
And the show now days still has it's funny moments but over it's seasons it's begun to lose it's appeal.
While the characters are still great, the fact of the matter is it seems the writers have seemed to lost the idea of being inovative and instead spend the episodes either running one overly repetitive joke that gets old relatively quick, or pulling things from prior seasons that were funny then. Unfortunately when the joke is being shown for the 3rd or even 4th time they aren't quite as funny.
What was a show that seemed to push the limits and offer some gut bustin histerical moments, has seemed to drop into a, "this has worked for us before, lets do it again," design process.
I'm all for the occasional joke that gets drawn out a bit longer, or shows up again at some random unexpected time. But unfortunately this happens all too often anymore making the show disappointing.
Hopefully in the upcoming seasons the writers start realizing they need some new material and revitalize the series by bringing it back to it's roots. And by that I man NOT re-running the same jokes.