Gaia's Garden by Toby Hemenway has some photos.

What you can do is use decorative garden design PRINCIPLES, but use food-productive PLANTS.

Sue

I'd encourage you to poke through Ros Creasy's website:
http://www.rosalindcreasy.com/

She lives/works out of Los Altos in the bay area, and her entire garden is chock-a-block full of beautiful edibles. Here is a video where one of the Dave Wilson fruit tree nurserymen visits her home:
http://www.youtube.com/watch?v=53sVLm3UYvM

She doesn't exactly fit under the permaculture label - she tears everything up twice a year and has a part-time gardener helping her every day - this is her livelihood, after all. But she is definitely an edible landscaper, and has some lovely examples of perennial edibles throughout her garden.