In the 80s and 90s it would probably be some fringe book that maybe has a cult following that grows steadily. But once the internet takes off, man, that book is going to be legendary. If you went back in time now, what events could you name off the top of your head and when exactly? When did the Berlin Wall come down? When was Tiananmen Square? When did Gulf War start? I know there was a Boxing Day tsunami but I forget which year? When was the DC sniper? Also what happens when you do alter everything so much, say stop 9/11, that everything becomes unpredictable? I would be the most useless time traveller. If I was stuck in the past I would try to change it so much I would get new content. No 9/11 and maybe we get Bryan Singer's Battlestar Galactica and different later seasons of Enterprise.