I'm a fan of street-name signs as seen across the world... especially here in North America. The variation is astounding, and they are one of the most often overlooked parts of the urban environment.
Well here are a few thoughts:
City logos are cool.
Backlit overhead signs: also pretty cool, although I wonder why we can't get them east of the Rockies.
I'd like to see more block numbers on signs across the US, the way Chicago does at major intersections.
Those huge city-designed traffic signal poles, with street names listed on them,
Cities that sign streets well:
Laval, QC, Canada (easy to read, consistency of signage, city logo)
Phoenix, AZ (easy to read, unique style)
Vancouver, BC, Canada (easy to read white-on-black, unique style, block numbers)
Skokie, IL (large signs with block numbers)
Windsor, CT (cool round shape and color scheme, applied throughout the whole city; see Outremont and Ville Saint-Laurent, QC, Canada)
Santa Monica, CA (distinctive blue color and logo, aesthetically pleasing font)
Cities that don't know how to sign streets:
Cicero, IL (small, ugly, and often missing)
Memphis, TN (no consistency of style, missing cardinal directions, which are important here)
Allendale, NJ (and several other Bergen County towns: small signs, often old and missing, especially for cross streets)
Metuchen, NJ (those four-foot posts in the ground are a pain to read, also see Park Ridge, IL)
Arlington, MA (often hidden, missing, and just plain ugly)
Post your photos of street signs here!