OK FOR HIGH SCHOOLERS 16 AND OLDER Denzel Washington is a powerful, mysterious presence as Eli, a hero/prophet in a post-apocalyptic world. Eli carries with him a book of great import (it is left unnamed until near the end) that he salvaged after "the last war." Co-directors/siblings Albert and Allen Hughes here combine ultraviolence with a strongly spiritual theme, which makes The Book of Eli an arresting parable. The film's intended message is muted and cheapened, however, by repeatedly deafening and bloody fights and shoot-outs. Eli is trekking across the land because a voice told him to take the book West. In a ruined city, he meets a power player, Carnegie ( Gary Oldman), who rules the place with his thugs. Carnegie wants Eli's book. He thinks it will increase his own power. His mistress ( Jennifer Beals) and her daughter (Mila Kunis) try to help Eli. The mayhem earns the R rating, as do scenes that imply intended sexual assaults (which are stopped), other milder sexual innuendo, and some strong profanity.