Speaking of Mr. Brichter, Federico Viticci of MacStories interviewed him about Letterpress:
LB: I really dig the modern look of Windows Phone, but this is a touch more human. Even though it’s mostly flat, there are subtle shadows when you drag tiles, or pop up a dialog. The human eye has evolved to notice details like that, I think it helps.
F: Which is kind of funny when you see the poker felt table Game Center brings up.
LB: Don’t get me started.