I used to work at a bookstore, and i always hated looking at books like "90 minutes in heaven" and "i had surgery and saw jesus while brain dead" type things.
http://science.howstuffworks.com/sci...fter-death.htm
I have a coworker who used to be a drug user, so when he was 18 or something, he killed himself. They rescusitated him and he claims he saw things so now hes a born again christian (though the fact that he's very very gay and drinks a lot is .... kind of ironic).
Also, when you're dying, you have a mass amount of chemicals being shot into your brain (BLTC talked about it once). If you DON"T see weird shit when you're dying... then you're probably already dead or a pussy copmlaining about a papercut.