Mondo, the makers of highly sought after, highly limited posters, brought Studio Ghibli based worked to San Diego Comic-Con in 2012 and 2013. This year, they're going for a different anime movie well known to western geeks with a Ghost in the Shell poster by Kilian Eng for sale at their booth.
Their art from a 2013 vinyl press of a Studio Ghibli soundtrack:
Their art from 2012's SDCC:
The previous Totoro poster: