unknownskywalker:

An elegant tower for a more civilized age

To promote the launch of the Star Wars box set on Blu-Ray, 60 4,500kw lights turn the BT tower into a giant lightsaber beaming a ray of blue light 200m into the sky, meant to represent the Jedi weapon from the films. The lights were switched on by actor Anthony Daniels, who played C3-P0 in the films.