Passage: Haneke's feature film debut was 1989's The Seventh Continent, which served to trace out the violent and bold style that would bloom in later years. Three years later, the controversial Benny's Video put Haneke's name on the map. Haneke achieved great success in 2001 with the critically successful French film The Piano Teacher. It won the prestigious Grand Prize at the 2001 Cannes Film Festival and also won its stars, Benoît Magimel and Isabelle Huppert, the Best Actor and Actress awards. He has worked with Juliette Binoche (Code Unknown in 2000 and Caché in 2005), after she expressed interest in working with him. Haneke frequently worked with real-life couple Ulrich Mühe and Susanne Lothar – thrice each.

Question: What year did Isabelle Huppert win best Actress?
2001