Helper Dogs
I've had several encounters with helper dogs in the past couple of months, two of which seem noteworthy...
One evening I was having a chat with a colleage and he mentioned that his girlfriend occasionally came down with migraines. Late that night I boarded the bus to return home and sat behind a woman with a chihuahua on her lap.
During the course of the trip I learned that these dogs can be trained to recognize early signs of migraines, sometimes up to 30 mins before onset. Interesting coincident, I thought, given my discussion earlier that evening.
Later that week I was waiting on a subway platform and what should appear but several helper dogs being led around by obviously 'sighted' folks in a rather excited, though disciplined manner. I believe these dogs were being trained to become helper dogs.
My conclusion? None. It felt like quite the coincidence, discussing an issue I have little knowledge of, discovering that there's a type of dog that can precognate the issue, then running across a cabal that trains these creatures in the subway.

Hi Bob-
I need more info about the chihuahua...I get nasty migraines.
Coincidence? This week I saw a clip from an episode of Nature on PBS titled, "Can Animals Predict Disaster?"
Some scientists believe that animals can sense disasters like the tsunami in Asia. The show's on Sunday.
i started getting migraines when i turned 20 & have been suffering ever since. i don't get them enough to call my condition chronic but during certain times of the year (fall & spring) i have them almost weekly.
getting an extra 30 minutes to take medication certainly would bolster my families case for getting a dog. hopefully the ability is not only tapped by chihuahuas. can't say that i find them all that cute.
i take the dog to the video store with me, but she still hasn't learned to predict when i'm about to pick up a really bad movie.
A Monkey Butler would be just the ticket...proposed in Maxim magazine, considered here, and also mentioned in at least one Simpson's episode (full transcript).