There appears to be quite a bit of controversy regarding the explosion between the pillars. However, what I find amazing is really the elevator.
Why? Because by shooting the two cables attached to the counterweight, the lift plummets like a stone (or a large, metal box if you like), to land in the "basement", as most people argue.
Now, correct me if I'm wrong (and I'm sure you lot will), but elevators are designed to PREVENT this from happening, with breaks on each corner of the lift. Now, in the film, they spark nicely, but they should have stopped the lift dead.
Oh, and one last thing. I want that hand cannon that Neo uses! (or at least, to know who supplies his ammo) One shot, and that cable breaks like glass. (Note: This is not a slip-up, just an observation)