Perhaps the first vector graffiti logo ever created, and certainly the most famous, I drew this by hand way back in 1996 and then used a now-defunct app called Adobe Streamline to convert my drawing to vector where it could be enlarged to any size with no resolution loss. The style is based on my daily exposure to graffiti on the subways and trains in Philly back in the early 1980s.

Note, this is the original logo. The current version out there is a hack, and has an ugly vertical line inserted between the J and B at the top.