I was watching the Batman Superman Movie again. amazing!!!!
My favourite scene is when Superman uses his x-ray vision to "peek" under Batman's mask and lean his secret identity. Later we see Clark Kent out of costume in his bedroom and he notices a bat tracer on his cape. He looks out the window and sees Batman perched above a far off building with a pair of binoculars. Batman solutes Clark then disappears into the night. Clark crushes the tracer in between his fingers.