Yes it is, Zombie is worth watching and i also recommend "Re-Animator", " Dead Alive", "Maniac ( 1980)", " Scanners", " Demons", " Suspiria", "Tenebre", Dario Argento's movies, "Nightmare City" ( a.k.a. City of the Walking Dead", "Vampire Hunter D", "Perfect Blue", " " "City of the Living Dead", "The Beyond", "House By The Cemetery", " Saw", "Se7en", " and "Cannibal Holocaust".
Be warned, "Cannibal Holocaust" is a preety extremely violent, realistic, gory and sleazy but it was the movie that inspired "The Blair Witch Project" with the same idea of filmmakers trying to find lost footage in a forest except in this movie it has New York documentary filmmakers going into the South American jungles and meeting up with some cannibal tribe members. There is of course scenes of brutal violence like impalement, castration, actual animals getting butchered such as a turtle getting ripped open to be prepared as a cannibal tribal man's dinner, cannibalism, rape, gouging and sleaze abound. It's a hard to watch but very rewarding horror movie experience not for the faint of heart, if you can handle it and it's coming to DVD on October 25th.