British author Lynne Truss pointed out that the title of the film is grammatically incorrect. In her best-selling style book 'Eats, Shoots & Leaves: The Zero Tolerance Approach to Punctuation', she correctly establishes that the title is missing an apostrophe ("Two Weeks' Notice"), thereby denoting proper possession of the title's subject. The original hardcover edition of 'Eats, Shoots, & Leaves' also featured Truss in her author's photo, glaring at the poster and holding a marker where the apostrophe should be.
During the traffic jam and trailer scene, one of the men in the Poland Springs truck behind the RV is Sandra Bullock's real-life brother-in-law according to Ms. Bullock on the DVD commentary.
The building Sandra Bullock's character and her two companions were trying to save at the start of the film was once a theatre, and now a church, located on 175 St. and Broadway in NYC. It's the same building used to film the Indian palace movie scene in The Guru (2002).
During the Charity Ball, June is wearing a sheer, almost see through dress. As June and Wade enter the elevator, during the elevator scene and as they enter the apartment, you can see June's areolas through the top. Then, when Lucy comes into the apartment and catches June in a state of near undress, she is now wearing a opaque solid black strapless bra. She could not have been wearing that particular bra in the previous scenes.