I do work on chalkboards at work all day, like this one:
But lately, a whole bunch of freelance chalboard jobs have appeared, like this cover for UNO magazine:
Or this set board for a beer company (to look like it was in a bar, 3 feet by 5, here are details):
Or fake chalboards (made of foamcore) for an event for the Telling Room in Portland:
and finally, this Photoshop chalkboard for an event for WFM in Boston:
Pretty wild, eh? Chalboards everywhere!