Jesus may have raised Lazarus from being dead. But these people awoke more recently without His help...
In Russia Lyudmila Steblitskaya has risen from death not once: But twice! In October 2012 her heart stopped but doctors were able to resuscitate the grandmother. But then in November she died for good. Her distraught daughter made all of the arrangements for the funeral. But after being packed away at the morgue for three days, she woke up complaining that her skin was peeling from the severe cold. http://siberiantimes.com/other/others/features/a-dead-siberian-woman-speaks-of-miracle-on-coming-back-to-life-after-three-nights-in-morgue/
In China Li Xiufeng scared/astounded friends after being dead for six days. In February 2012 she succumbed to a head injury and was found not breathing. She was put in a coffin in her home so that people could pay their last respects. Terrified neighbours found the coffin empty and Ms. Xiufeng in her kitchen cooking. The real downside to coming back from the dead in China is that all of her possessions had been burned, in accordance to local tradition. http://www.dailymail.co.uk/news/article-2109719/Chinese-woman-95-comes-life-climbing-coffin-days-died.html
In Venezuela Carlos Camejo died in a car accident. During the autopsy as medical examiners began cutting into him, he felt excruciating pain and sprang screaming back to life. http://odditiesunsolved.tumblr.com/post/14493407024/carlos-camejo-33-was-declared-dead-after-a
For a more comprehensive list of people who've come back from the great beyond: http://theweek.com/article/index/228986/7-bizarre-tales-of-people-coming-back-from-the-dead
Many believe these cases can be attributed to, 'artificial death.' A rare condition in which the heart rate is so slow it can't be recorded.
Some real zombies...
Tetrodotoxin is a poison which mimics an artificial death.
See the movie, 'The Serpent and the Rainbow' which is based on the story of a botanist who travels to Haiti to find out about a drug purported to kill people and bring them back in a zombie-like state.