For me, anything based mostly on story or suspense is out, because I know what's going to happen. Even if they are some of my favorites. So usually it's for the visuals, music, or action.

Hardcore Henry I've probably watched the most. Such an absolutely wild action movie.

For visuals, I've watched What Dreams May Come(despite it being pretty heavy) and Tarsem Singh's "The Fall" probably five times each. The latter is hard to find, but definitely worth a watch if you come across it.