The Venice Film Festival on Thursday was set to unveil Taiwanese director Ang Lee's steamy spy thriller "Se, Jie" (Lust, Caution) as its 75th anniversary celebration got into full swing. Wednesday's opening gala of the festival, which runs until September 8, saw the world premiere of British psychological drama "Atonement" with Keira Knightley and James McAvoy. Gina Doggett reports.