So....watch this talk. PLEASE. I think it's great. Seriously. I had a similar experience (well I didn't but I heard about it through my mother) when my grand mother passed away 10 years ago.
I lived in Washington DC 10 years ago and was training for a marathon in Miami. I got a call Friday morning at 930am to say my grandmother had been brought into hospital with panic attacks. I was flying to Miami the following day. My phone rang at 930 pm on the Friday night and I knew immediately that she was gone. I spoke with my mom about her final hours and she said the strangest thing (I thought at the time). She asked my mom when was I next home and when she replied two weeks, my grandmother sighed in resignation. Mom said she knew she wouldn't be around to see me. Then all of a sudden she looked sad and when my mom asked her why she replied "I really liked this world." So she completely knew that she was dying and that it was going to happen soon.
This Ted Talk is very interesting and I completely agree with Dr. Christopher Kerr. In fact, Id love to know more - does anyone have any experience similar to mine or his?