 There is a widely held belief and the Gene Siskel and Roger Ebert  disagreed most of the time. This is, in fact, not true. Actually  they agree most of the time on either a negative or positive review  but since they were best known for the feuds in between, the legend  has grown that the two were always at odds with one another. Taken  from all of the films that they reviewed in their years together  they actually only disagreed about 30% of the time.