Joseph Carl Robnett Licklider may well be one of the most influential people in the history of computer science
He had the vision of an “Intergalactic Comptuer network” that bacame much later the ARPANET, then the Internet.
Internet pioneer: http://www.ibiblio.org/pioneers/licklider.html
Wikipedia page: http://en.wikipedia.org/wiki/J._C._R._Licklider
Computer History : http://history-computer.com/Internet/Birth/Licklider.html\
Licklider Biography from M. Mitchell Waldrop http://www.amazon.com/exec/obidos/tg/detail/-/014200135X/qid=1112481964/sr=8-1/ref=pd_ka_1?v=glance