For those who can't get enough of the striking patterns of Portuguese tile, here's an inspiring book.
Tile Designs from Portugal (The Pepin Press), by D. Hurtado de Mendoza, features more than 100 traditional tile designs, dating back to the 17th and 18th centuries. The hardcover book comes with a CD of all the patterns in high-resolution formatd, so that you can use them in your own creative projects. The book is $24.99 from the Pepin Press, which has published a whole line of books on tile from various locales.