Don't forget the team at the Centre for the Study of Terrorism and Political Violence at the University of St Andrews (http://www.st-andrews.ac.uk/~cstpv/).
They run the Certificate in Terrorism Studies (www.terrorismstudies.com) and a Postgraduate Diploma / MLitt in Terrorism. The Certificate course provides a great introduction to the whole topic, with a wide range of optional modules all delivered over the internet.
They are one of the best thought of groups of terorrism scholars, with staff details at http://www.st-andrews.ac.uk/~cstpv/staff/staff.html.
Chris
