NPR's Neda Ulaby and Monkey See blogger Linda Holmes delve into the week's best movies, books and music stories from NPR's Arts Desk. First, NPR's Lynn Neary explores the phenomenon of diet books. Then a report on the fuzzy legacy of music icon Frank Zappa. We hear from the legendary Michael Caine who reflects on a scene he shared with Heath Ledger on the set of The Dark Knight. Plus Stanely Crouch discusses HBO's latest miniseries, No. 1 Ladies' Detective Agency. And lastly, musical moments from Jill Sobule and David Was.