Chicago-based film critic Ignatiy Vishnevetsky has been named co-host on Roger Ebert’s new review show Ebert Presents At the Movies. The 24-year-old Russian-born Vishnevetsky replaces original co-host Elvis Mitchell and will give out thumbs-up and down alongside Associated Press’ Christy Lemire. Mitchell’s departure was announced last month when Ebert released the show’s premiere date, Jan. 21, dismissing speculation that move was due to lack of chemistry between Mitchell and Lemire. Vishnevetsky writes for the film website Mubi and contributes to the Chicago Reader. Ebert, who will appear on the show in a segment via a computer-generated voice, is executive producing the series, set to air on public TV stations, with his wife, Chaz Ebert.