The line where Joyce reveals to Lois that her real last name is Chevapravatdumrong, but that she changed it because "they'd never let that name on TV", is an inside joke to the show's supervising producer Cherry Chevapravatdumrong. Her credit can be seen at about 3:54 when the priest starts his joke about church parking.
The opening credits are a shot for shot remake of the opening credits for The Incredible Hulk (1978).
During the scene in the church where everyone is singing, you can see two older people in the back who resembles Peter's parents.