I did it over the course of a few weeks and it was absolutely fascinating. Watching how things developed, from direction, to film technology, to musical score, to set pieces, to action choreography, to geopolitical and social issues, to acting styles, and so much more, was an experience I won't soon forget. I can't recommend this enough for any film fans. I did not go into watching them for that reason, but after watching for a while (particularly as the Connery films transitioned into the Moore films) it became clear to me just what i was witnessing.
EDIT post title should read every "few" years