Um, I don't think season seven has started yet. If you're talking about season six then....
******SPOILERS*********
A lot has happened on Family Guy this last season. First there was Blue Harvest, Seth's spoof of the original Star Wars. Definately a lot of funny moments, from poking fun of Star Wars, to characters having those sort of everyday conversation in not-so-everyday situations.
"I know some manuvers. We'll lose them."
"That's your manuver? Moving slightly to the left."
"Well, we're not in the same place we were before. That ought to confuse them."
"But you hardly moved at all. All you did was list lazily to the left. I'm pretty sure they can keep up."
"Well I'm going to go shoot some womprats in my T-16."
"My God, you shoot small animals for fun? That's the first indicator of a serial killer you freak."
"There's two suns and no women, what am I supposed to do?!"
This season Joe recieved a new pair of legs and became a total jerk once he was no longer handicapped. One of the most clever episodes of the season featured James Woods returning to get revenge on Peter for locking him inside a crate. Woods steals Peter's identity and everyone is forced to act like this major celebrity has always been Peter Griffin. That episode was nonstop laughs.
Brian's dumb girlfriend Jillian breaks up with him. Brian also puts the moves on Lois and gets into a physical fight with Peter. And finally Brian finds that he has a long lost (human) son who's a total punk.
Stewie decides to go back to his old ways and attempt to kill Lois for an episode and then follows through by taking over the world. That was some nostalgic fun.
Peter becomes overprotective of Meg for one episode, that's continuity for you. He also discovers that he's not a natural born American citizen but an illegal Mexican immigrant. And because he's a lousy husband who can't remember a single detail about Lois, his marriage isn't acknowledged to grant him citizenship. Funniest Peter segment this season, if you ask me, is when he got a stroke and tried to drive a car with only one functioning side of his body while trying to sing along to REM. You have to see that one to believe it.
So yeah, there's a lot of funny going on in the sixth season. If you're a fan, pick it up. Several episdoes start off funny but really die off towards the end but the funny parts are enough to feel satisfied.