It's a tempting target to add some writing to these Batman billboards isn't it?
Augor and Revok got one that we posted not long ago here.
Here's another one reworked by Killers of Giants crew:
This one is visible as your cross over the 101 on Western heading south.
A little help on this one? UPDATE: Thanks to Graffhead for identifying this piece by Thor.
Photos by Mark Mauer