my hubby is still intact but i hear that it is possible. the success rate of a vasectomy depends on the method that they use, but i hear that it is still possible for them to shoot out some soldiers from time to time.
my aunt knew a woman who had a hysterectomy once and then found out she was prenant months later because unbeknownst to her doctor, she had 2 sets reproductive organs (2 uterus' and 4 ovaries). bizzaro, but hey, anything is possible.