I set it to the highest graphics, too. I did the same with Crysis 2. It's fun having an epic computer.I can't wait for the 3rd party graphics overhauls to be released. I could also get some custom water shaders to pretty things up a bit more. Also can't wait for the dev tools, I want my own special mansion with tonnes of weapon racks and mannequins!
Also I'm making a quick assassination in front of peoples faces video
Edit: here's how I play http://www.youtube.com/watch?v=XRiUHHHAzyY