I lost my dad at a very young age and as I grew up people that new him often commented at how extraordinarily alike we are. As I became more interested in finding out about his early life through photos, and relatives I gained a sense of not only who he was but often understood instinctively what he was even THINKING at the time. I realized that many of the choices, good and bad, were the same path I probably would have chosen due to the similarities in our temperament.
Dad flew bombers in the Pacific in WWII and, because I know so much about his training, missions, crew mates, housing and so on, it's almost as if those are my own very distant memories. Even the old b&w photos look like it's me standing there.