I have to agree with the overwhelming majority here (minus the foul language and body fluid references).
Front is fabulous, rear is a bit busy (reminds me of a Japenese concept car). Overall, simply outstanding. Now lets get something similar in the portfolio post haste to do battle with the R8 and 911.
Also, as another poster mentioned, BMW really needs to lose the joy marketing mantra, it's not very masculine. "Sustainable" does not stir the senses either. Lets get back to the ultimate driving machine theme!