Here's an amusing video of various old school graffiti artists explaining the art of the fill-- a quickly executed outline piece. While some consider the fill (like the tag) inferior to more complex graffiti pieces like the full-car subway burner, the bombers in this video argue the opposite: that the fill is really the embodiment of graffiti perfection. It's interesting stuff. [Related: Getting Up from Atari-- possibly that's where this video comes from, since it features a bunch of the same artists. Also check out 149st's graf glossary.]