There's the interesting NDE and OBE of Anita Moorjani - just type her name in youtube search window - where she describes having a greater knowledge, more expanded vision of the world beyond our limited understanding. Her case is certainly not the only one!

What I've always found fascinating was the description of the afterlife given in the book "Autobiography of a Yogi" by Paramhansa Yogananda, in Chapter 43, in which his spiritual teacher has made the transition and returns to describe it to his student:

http://www.crystalclarity.com/yogananda/chap43.php