"The What?" performed by The Notorious B.I.G. featuring Method Man is playing while Luke visits his supplier Percy, who was played by Method Man.
The hat that Sir Ben Kingsley wears was his own. He grabbed it when he set off to New York City to film this movie, thinking it might be useful.
The screenplay for this movie was featured in the 2007 Blacklist; a list of the "most liked" unmade scripts of the year.
The scene in which Luke dances and the pavement lights up is a reference to Michael Jackson's video of his song "Billie Jean".
The first song in the movie, to which Luke is listening on his headphones, is "The World is Yours", which features the lyrics "I sip the Dom P, watchin' Gandhi till I'm charged." Sir Ben Kingsley won an Oscar for portraying the title character in Gandhi (1982).