Intro to Study

This Batman study will include four main films containing the four actors who have played batman in cinema movies, which are Michael Keaton, Val Kilmer, George Clooney and Christian Bale. Clips of a trailer for each of the actors is listed below;
Keaton: http://www.youtube.com/watch?v=VRqa47-jv0M
Kilmer: http://www.youtube.com/watch?v=mbhEr87Um-A
Clooney: http://www.youtube.com/watch?v=3slInVLWC9I
Bale: http://www.youtube.com/watch?v=5y2szViJlaY

The focus of my research task will be the range of change in the character of batman over the last 23 years, and how, with the use of actors, film styles, and screenplay, the franchise of Batman is now as dark as ever