Thanks to Jacob and his CIVICnurgs for the tip.
Here on this beautiful, sunny Friday we have a lovely alley cafe in...San Francisco?!?! Yep, this ain't Yurp — It's the good ole' USA. Photo from an inspiring article about the cultural value of alleys from George Calys at Examiner.com.
Jacob also forwarded an LA Times article about the growing trend to reclaim heretofore wasted alley space from drug dealers + criminals and transform them into places to live. Plus a link to the absolutely wonderful USC Center for Sustainable Cities' Alleys Project page, which has tons of resources with which to fire your imagination. Bzzzrt!
There are literally thousands of opportunities to convert alley space in our fair city. For instance, the Westside Comedy Theater in a Santa Monica alley is just dying to have a bar installed next door:

Photo from LAist.
Every Friday I'll post a narrow or otherwise interesting street snapshot from somewhere around the world. Got a Friday Favorite of your own? Send me your photos!