Some of the others I think are good:
Si:
Desa:
Skuf:
Noxer:
Korn:
Rate:
2esae:
http://bombit-themovie.com/blog/wp-content/uploads/2007/10/free_2esae_billboard_2.jpg (broken link)
Ghost:
Red:
Serf:
Boner:
Cheez:
Neckface (originality and uniqueness):
Trap:
Moody:
Goal:
Foot:
Running Man:
Hands:
Asp (rip):
Pg/Pgism (Rip):
Ve (Rip):
Dg:
Soo many more I just can't think right now... But yea, graffiti for me is definitely art, definitely something I wish would stay for good... And yes, I would'nt mind getting my property written on with graff, if I owned a store... But houses? writers aren't allowed to write on houses... Writers have rules of their own... They don't write on houses or cars...