Physical time travel is quite a concept to ponder. The implications to observe & even interact has astounding implications. Even just having the ability of precognition has startling implications. To be able to FlashForward to a certain point in time would be mind bending, indeed.
The_Lone_Gunmen_series starts with a plane that's under remote control towards the WTC. The actual WTC Vertical_Impact_Locations were above the 77th & 93rd floors, or about 924' & 1116'. A TV show can't prove that tower 2 was hit at just over 900' & tower 1 was hit just over the 1100' level. Such impact accuracy could be achieved by remotely controlled planes. Otherwise, its just another interesting coincidence in earths timeline.
http://en.wikipedia.org/wiki/Millennium_(1989_film)#Plot
Grand_Tour:_Disaster_in_Timescape
http://en.wikipedia.org/wiki/Minority_Report_(film)#Plot
http://digilander.libero.it/flavio.cenni/
http://www.lux-aeterna.co.nz/Titan.htm
Futility,_or_the_Wreck_of_the_Titan#Similarities_to_the_Titanic
http://www.jamesmdeem.com/timepage.facts.htm
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http://multiverseextra.blogspot.com/2009/10/blog-post.html