Betrand Le Roy of Atlas fame has an interesting writeup on what he understood from the Matrix Trilogy. This is definitely a must read. One of my favorite comments is included below.
The Oracle, according to its name, is the Matrix's database (I guess Sql Server would have been too obvious ;)
That's hilarious! Seriously this is a good read. I've been looking
for an excuse to watch those films again. Looks like I got one.