The ultimate xeriscaping may be: hire a muralist to paint plants on your walls!
Well, I'm not sure that's what the folks at Casa de Ladrillo (the house on north side) - 3131 E. Glenn (e. of Country Club) were thinking, but the thought crossed my mind. (I took this photo back on November 25, 2010.)
Update (September 12, 2013): The shot above was taken from the southeast corner of the home. Later, I found a mural near the southwest corner and posted a photo today.