The trailer shows an alternate version of the club scene kiss with Nick and Norah. When Tris comes up to ask them how they met - it is Nick who tells Tris that they have the same dentist. In the actual movie, Norah is the one that tells this to Tris.
Both Michael Cera and Jonathan B. Wright worked on Youth in Revolt (2009). During production of Nick and Norah, they rehearsed a confrontational scene between their Youth In Revolt characters.
Norah is a Jewish girl attending a Catholic high school. This is explained in the book that Norah wants to attend any school Caroline does, but due to Caroline's obnoxious behavior, she's kicked out of every school she's been to and is only accepted at a Catholic school.
When everyone finally finds "where's fluffy" (after the radio hint for 5th Avenue at 68th Street), and they are climbing to the roof of that address, the Empire State Building is shown towering above the rooftop and can be no more than a block or two away. In reality, the Empire State Building is more than 30 Blocks away from that address and would seem much more distant. The proximity of office buildings and their exit via Penn Station would lead one to believe that they were in the Midtown area likely between 8th avenue and 5th with and between 31st street and 35th - not the address mentioned on the radio hint.
When Nick meets Norah at the diner, they have a conversation about Tal and Becka Wiener and more. The conversation switches from them sitting at the table and then walking down the street then back in the diner then back on the street. The conversation is fluid but the scenes are not.
In the Port Authority scene, there are 3 errors. First the van pulls up on 8th ave in the taxi lane and parks. All the occupants get out and go into the Port Authority building. The van would have been taken almost immediately. Second error, The booth Caroline goes up to is not used for NJ transit which she would have needed to get back to Englewood. It seemed to have been used strictly for its proximity to the bathroom entrance. Third, in the "sandwich" scene Caroline is sitting with the sandwich guy in the main ticketing area on a subway bench. These benches are not located in the Port Authority, (except underneath in the subway) and there are no benches at all in the Port Authority ticketing area due to the lines that form there. It would be in the way.
How much sex, violence, and profanity are in this movie
A
For detailed information about the amounts and types of (a) sex and nudity, (b) violence and gore, (c) profanity, (d) alcohol, drugs, and smoking, and (e) frightening and intense scenes in this movie, consult the IMDb Parents Guide for this movie. The Parents Guide for Nick and Norah's Infinite Playlist can be found at here.
Q
Does this have anything to do with "The Thin Man"?
A
No. Other than the names of the main characters, Nick and Nora(h), there is no connection.
Q
What artists make cameos in the movie?
A
Project Jenny Project Jan, Bishop Allen and Devendra Banhart.