Kidman and Firth were on hand for a screening of their war drama, "The Railway Man," Friday. Also in attendance was the film's director, Jonathan Teplitzky.
Brad Pitt made a surprise appearance Friday for a screening of "12 Years a Slave," for which he starred and produced, the CBC said.
Paul Giamatti, Paul Landesman and Zac Efron were on hand for a screening of their film, "Parkland," about the assassination of President John F. Kennedy.
The film festival is ongoing through Sept. 15.