@Nikos : Happy Greek Independence Day to Parallax robotics' staunch supporter! I'm disappointed there was no Google Doodle to celebrate, I had to use BING to learn this juicy fact.
I'm sure Plato and Socrates would have been Parallax fanboys. Thank you for your diligence, enthusiasm, educational efforts and wonderful creations! Is your Artist robot drawing Greek flags on sidewalks throughout Athens?