Years ago I lived atop Queen Anne Hill, just north of Seattle Center. I'd walk up the hill every afternoon and I always wanted to create a mnemonic for the cross-streets, but never could, the act of walking uphill being either too slow or too exhausting.
Roy, Valley, Aloha, Ward, Prospect, Highland, Comstock, Lee, and Galer.
Seattle does have a great street-name mnemonic for the downtown streets. There are 12 streets, paired one-way streets where each pair of streetnames starts with the same letter: Jefferson/James, Columbia/Cherry, Madison/Marion, Spring/Seneca, Union/University, Pike/Pine. Hence the starting letters, JCMSUP became "Jesus Christ Made Seattle Under Protest."
(I probably don't have the streets in the correct order as listed, just the pairs. :^)
I like the alphabetical arangement of streets out of Boston starting at:
Arlington
Berkley
Clarendon
Dartmouth
Exeter
Fairfield
Gloucester
Hampshire
The game GTA IV does something similar for part of its take on Manhattan... Amethyst, Barium, Calcium, Diamond, Emerald, Feldspar, Garnet... etc etc