A few days ago I said the CA crop circle looked to me like  a computer chip or motherboard. I suggested that it was part of some marketing campaign for a new chip or some other electronics toy.

That suspicion turned out to be dead on. From the article (and the confession):

It turns out the crop circle wasn’t the work of aliens, but instead – surprise! – it was a publicity stunt by Nvidia Corp., a maker of chips for PCs and smartphones.
Honestly, though, this doesn’t make me feel smart. It was pretty obvious.  So much for the alien hysteria that accompanied it.