Have I mentioned I like mosaics?  It's a hobby I developed a number of years ago when I was working as an engineering consultant at eBay.  I worked at designing and optimizing various art, craft and collectible categories, and one of them was mosaics.  By working with the eBay mosaics community, I developed knowledge, an interest and then a love for the arrangement of tiny tesserae.  I've marveled at the mosaics of St. Peter's in Rome, gazed at the golden glitter of St. Mark's in Venice, was in awe of the Byzantine mosaics earlier in the trip in Palermo and Monreale.  Then we got to the Villa Romana del Casale, and my brain exploded. (Another wow moment!)