To see celebrities during TIFF, all you have to do is park yourself on a bench in Yorkville and watch as they make their way to restaurants and visit the high end stores in the area. But if you want to be assured of a celebrity sighting (especially Oprah Winfrey, who has Toronto buzzing about her attendance at TIFF today), pop on over to Roy Thomson Hall tonight to see Julianne Moore and Liam Neeson walk the red carpet for the gala screening of their new film, Chloe. The screening starts at 6:30, so be sure to arrive early to get a good spot. Later in the evening, also at Roy Thomson, Mariah Carey and Oprah Winfrey are scheduled to make an appearance to promote the new drama Precious: Based on the Novel “Push” by Sapphire, which is already creating Oscar buzz. Then comment below to let us know who you saw at TIFF!