Other notable terrorists might include George Washington. One man's terrorist is another man's freedom fighter. It's a nasty consequence of modern warfare and geo-politics where major nations cannot openly engage one another and so they have to resort to special combatant units who can often be branded as terrorists.
Terrorists are convenient simply because they can be discarded and knowledge of their actions can be so easily denied by their operators. Unfortunately when terrorists are left for dead, either because they have become a political embarrasment or their cause no longer equates to others or they are succesful in their goals, they can easily turn against their former controllers.