I was watching some season ten episodes that I hadn't seen before with a friend the other day and I noticed that in the opening credits, when the The Griffins run up the staircase flanked by female and male dancers on either side, that they're actually supporting characters on the show, as in Quagmire, Joe, Bonnie etc. I pointed it out to my friend, and he said he'd never noticed it before, so I went back to look at some older episodes and found that previously the dancers have just been non-descript characters. So I was wondering, the credits have obviously changed, but when did it happen, was it between seasons nine and ten?
