Will Smith and Nicholas Cage both turned down the role of Neo for various reasons, fortunately. (Source)

In the car where Neo is debugged, Switch calls him a Coppertop. This is slang for a battery; a term used in old Duracell commercials. Redpills will call bluepills this because they are, like Morpheus so visually describes, being used like batteries by the machines. It's not a nice thing to call someone. Would you like being called a battery? (Source)

The ending date on the computer monitor is 9-18-99. When Neo is late for work, he wakes up at 9:18. Lilly Wachowski's wife's birthday is September 18th. (Source)

Neo's driver's license expires on September 11th, 2001. The movie was released in 1999. Coincidence, or conspiracy? (Source)