A naïve young poet (Ewan McGregor) falls in love with a cabaret star (Nicole Kidman), and their ill-fated romance serves as a convenient peg on which to hang a dazzling array of songs, from snatches of Rodgers and Hammerstein’s “The Sound of Music” to Madonna’s “Like a Virgin.” But the real star is director Baz Luhrmann, who came up with this infectious concoction that won two Oscars for art direction and costume design as well as six other nods.