The new "Family Guy" actually has a longer, official title: The Unholy Zombified Second Coming of Family Guy.
Two big problems with the new show:
1) It got more political. It was not really political before.
2) They keep rehashing the funny moments from the first series, as if to say "hey, you remember how funny this show used to be?" I don't watch the new show often, but they've made several references to one-off jokes from the first series, including the infamous "evil monkey" and the greased-up deaf guy. While those moments were funny, they were funny because they were unexpected and off-the-wall. Repeating it over and over again doesn't work, and just looks sad, like they can't think of anything new.
All in all, I was really excited about it, till I saw it. Old Family Guy is good but the new incarnation is just tired and unoriginal.