Andrew "Zoz" Brooks, left, graduate student in electrical engineering and computer science, watches as TATS CRU graffiti artist Sotero "BG183" Ortiz completes a mural in memory of MIT night watchman James "Big Jimmy" Roberts Sr., who died in 2005. Photo / Donna Coveney

A version of this article appeared in MIT Tech Talk on May 10, 2006 (download PDF).