In the latter years the focus on individuals in history has returned. Not necessarily just on the Great Man, but also on the Man on the Floor. The authorship of the late Steven Ambrose is a good example of the trend. We live in the age of the individual and many readers want history-books that portray the problems and choices of people. I don't know about the bookmarket in the USA, but in Denmark biographys and history-books based on eyewitnes-accounts are HUGE. I know since my company makes quite a few of them. This development has so far only had a limited impact on the history-writing concerning our period, but it will come (I belive).
Personally I think the trend is quite valid. Maybe single people don't create history all by themselves, but they do shape the way things work out. It would be quite difficult to explain the Napoleonic Wars without attributing the individual Napoleon any importance at all.