In the x-ray room, the nurse calls for Katie to come and look at the engagement ring in Drew's stomach, but the nurse that arrives has "Judith" on her name badge.
in an early scene with Julia Roberts in the museum, Woody Allen is wearing long white pants. When he walks away, he's wearing khaki shorts. Later, he's wearing the white pants again.
Crew or equipment visible
The camera and Woody Allen are reflected in a mirror during the dance scene in the jewelry store.
In Venice when Woody Allen is singing "I'm Through With Love" the vaporetto boat in the background is going backwards, along with a smaller boat a little later.
Holden (Ed Norton) and Skylar (Drew Barrymore) are engaged to be married but during the scene in the jewelery store Holden is wearing a wedding ring on his ring finger. (The man of course does not wear a ring until after the wedding).