A guest (L) leans to smell one of the walls of Chocolate Room by artist Edward Ruscha during a media preview of the exhibit "Collection: MOCA's First Thirty Years" at MOCA Grand Avenue in Los Angeles November 12, 2009. Brought back from the brink of financial ruin by a philanthropist's $30 million gift, the Museum of Contemporary Art in Los Angeles celebrates its turnaround this weekend with the most ambitious exhibition of its own iconic collection. [Agencies]