What counts as history?

[kcguy]

The 1960's seems too long ago.

I've finally reached the age where a majority of American adults are younger than me, and even I'm not old enough to remember Watergate.

My personal metric is about 25 years, and that number may be a little high.  The Cold War is unquestionably history in my mind.  And we're starting to get to the point where 9/11 feels more like history than recent events.