The filming of Scrubs takes place in Los Angeles, California in the North Hollywood Medical Center (a non-operational hospital). The fictional place that Sacred Heart is located in Scrubs is known as San DiFrangeles. Which happens to be a mixture of the name San Diego, San Francisco, and Los Angeles.
JTAG is an IEEE standard (1149.1) developed in the 1980s to solve electronic boards manufacturing issues. Nowadays it finds more use as programming, debug and probing port. But first, let's see JTAG's original use, boundary testing. Boundary testing
7. J-CAT. J-CAT is an word now used in street slang that originated in the U.S. Federal and State prison systems as an acrynym with stood for J-Category inmates or J-CAT which is s housing unit for sex offenders. Most inmates detest sex offenders and do not associate with them. The word J-CAT became synonymous with someone you did not like, someone you thought was shadey or someone who was acting gay. The word then bleed into the streets from the prisons by released inmates. Over time the definition has broadened but the core of the word remains, it always indicates a negative feeling.