Probably the best known "name" in street art (AKA grafitti, related to "tagging" or to "vandalism" et al) is Banksy, the nom de spray can of... well, I think, a really gifted artist. He's clever, conceptual, a master of his techniques, and he creates memorable images. Like this one:
Image borrowed from A Brief History About Banksy, all rights are Banksy's, of course
Here's a link to earlier posts on street/grafitti art by Hugo Kaagman. Completely different style.
Completely different topic: Kitchen Dog Theater's production of In The Next Room: the Vibrator Play OPENS TONIGHT!