The Return of the Living Dead (1985) is a cult comedy horror about brain-eating zombies. Plot: Two medical supply warhouse workers accidentally release military 245-trioxine gas which reanimates the dead.
28 Days Later is a UK post-apocalyptic horror. Plot: A group of eco-activists releases infected monkeys form a lab. The infection spreads quickly around the world. 28 days later a survivor wakes up in a London hospital.
REC (2007) is a Spanish “found footage” horror. Plot: A TV crew films night shift of the firefighters who are called to an appartment to rescue an old lady. Everything seems to be normal until they are attacked by zombies residents.
Resident Evil (2002) is a sci-fi horror movie with Milla Jovovich. Plot: A serious accident happens in the Umbrella Corporation laboratory. A special military unit has to “solve” the accident while fighting with employees turned into zombies.
Zombieland (2009) is a zombie comedy taking place in the post-apocalyptic world. Plot: Zombie killer Tallahassee (Woody Harrelson), coward Columbus (Jesse Eisenberg) and two sisters Wichita (Emma Stone) and Little Rock (Abigail Breslin) are trying to survive together the zombie outbreak.
Plan 9 from Outer Space directed by Ed Wood is known as the worst movie ever filmed. Plot: Aliens come to Earth to prevent earthlings from creating the deadly explosive Solaranite. The want to realize the Plan 9 - resurrecting dead as zombies (ghouls).
The Walking Dead is a succesfull drama TV series developed by Frank Darabont (Shawshank Redemption, Green Mile) taking place in the USA after the zombie outbreak. The TV series follows the lives of a group o survivors, who try to survive in the world flooded by zombies and to find a safe place.
The Walking Dead currently finished season 2, 3rd season is expected to start in October 2012.