My favourite part of the program archaeology is when he digs right down to the core and discovers the computers are still keeping time in seconds since the time when man landed on the moon (and then discovers it's really a time a bit more than five months afterwards).
I never did think of UNIX time as tied to the moon landings that closely, but it's a nice fact. It was still odd seeing small negative timestamps when we were working on spacelog.org, though...