I'm not sure whether this thingy on a rooftop near 38th Ave & Irving is a cultural reference I'm ignorant of or some non-referential inflatable glow-in-the-dark party-lovin' ghost decoration one could buy at any Hallowe'en store, but it sure got my attention.

[Updated to add] I'm informed that this is an inflatable decoration in the shape of the character Oogie Boogie from the movie The Nightmare Before Christmas. You can buy it in stores.