He’s a coyote, a starving coyote. Actually, he’s a television reporter hankering for more blood and guts than anyone else. He’s another deeply disturbing character for Jake Gyllenhaal. In the new crime thriller “Nightcrawler,” Gyllenhaal plays gaunt sociopath Lou Bloom, who trawls the streets of Los Angeles to film horrific crime scenes for use in early morning local television news.