There's an early scene where Gil says to the family, "doesn't returning from Disney World make you want to throw up?" whereupon the daughter vomits all over his shoes. Such is family life, "Sinfonia Domestica".
The film ends, of course, with a birth scene. "It's a girl." The new babies make "a healthy bottom line."
The DVD has a long short "Art Imitates Life", where the cast and director talk about how many kids they have collectively and how their own experience as parents influenced the film. The had to find and hire "writers". Ron Howard says this is the most personal film he has ever made. Two other shorts are "Family Reunion" (with a depiction of the parlor game of "Wink", where you commit "murder" by merely glancing at someone with a stare) and "Words and Music."
A great quote from the second short: "You can use comedy to sneak up on people, and say things that aren't funny in real life." And from the movie when Gil says, "When your kid is born he is perfect, hasn't made any mistakes yet, but grows up to be like -- me."