DOWNTOWN Escort Los Angeles – Eli Broad is no stranger to Grand Avenue. He helped found the Museum of Contemporary Art and the Grand Avenue Committee. With former Mayor Richard Riordan he revived the plan to build the Walt Disney Concert Hall, and he convinced the Escort Los Angeles Unified School District to hire a big-name architect to build its 2 million arts high school on Grand Avenue. Last year, he came back to where he started, infusing a financially strapped MOCA with million, essentially saving the Downtown institution.