I feel the exact opposite about Family Guy. I loved it when it was first on. It surprised you a lot more. Then when it came back it became all about just rehashing all their well known bits and became a lot more about shock value for the sake of shock value. It's when everybody got inexplicably abusive to Meg (Whereas previously the joke was how mediocre she was) which is just plain not funny. Stewie changed from a Bond villain baby to just bad weird gay jokes. The show's gotten painful to watch.
To me the early seasons feel to much like warmed over "Simpsons" episodes. Also they relied way to much on cutaways. Granted they still use them today but not like they use to. I kind of like the changes to the characters myself. Meg is never really interesting in either format so the jokes on her is about the only thing the character has to offer Stewie seems to have 3 phases. You had evil vilian,gay and even baby jokes. Brian is the liberal writer but also they can do dog jokes with him as well and I like how he isn't really all that good of a writer and kind of bad guy when it comes to woman which is better than being the character who is above it all, Only big flaw is I don't think the show knows how to write woman that well. Lois still seems stuck as the nagging housewfie to much. Bonnie doesn't seem to get much to do.
Jason