Val Kilmer is gone. It’s strange to say, since he was such an important part of the fabric of movies – and of pop culture, really – for decades. And if it wasn’t movies, it was something else. He hosted “Saturday Night Live.” He appeared in an endlessly touring stage show as Mark Twain. He had a reputation for being prickly, maybe difficult, but for turning in brilliant performances that only he could. And then, starting in 2015, he began…