Cleveland, especially when he takes a bath and ends up falling out of the bathroom. "No, no, no, no, no!"
Others I like include Consuela ("We need more lemon pledge") although she can be a real b.tch, Herbert ("Get your fat as. back here....") and his barely living dog (just loved him singing as Audrey in "Little Shop of Horrors"), Angela (Carrie Fisher's character, Peter's boss), and since we're going down that territory, Debbie Reynolds as Mrs. Wilson ("Mrs. Killson" because she had an abortion.)
My favorite episode? When they go into an alternate universe and end up in a Disney film and sing "It's a great day for pie!"
Of the Griffin's, Lois is the most tolerable, Stewie the funniest, and Chris the most likable of the kids. Brian can be too much at times; Peter is just an idiot (although I love him spoofing "Reginald Van Gleason"), and Meg (other than being Ursula in the Disney spoof) sadly abused. "I cut myself!", she proclaims, both funny yet very sad at the same time. Some episodes, she just sits there without even saying a word. Even the writers abuse the poor girl by turning her into an extra!