And last but not least: The Architect!
Everything we thought we knew about The Matrix was blown up in a garble of crazy existential lingo. It was awesome. In a short, confusing monologue, we learn that everything is just a cog in the machine and if anyone manages to step out of line, the entire human race will be wiped out. The idea of destiny turns into slavery - you're trapped in the role you have to perform. And if you step outside destiny, everyone dies. You're no longer free to choose your path.
Plus, this parody spoof is my favorite thing ever. Skip forward to 5:50 to see the best part. And the other main reason I love The Architect.