Little bit of politics.

Made the pictures appear on the big screen for this:
UK Premiere of Oscar nominated film The Salesman. (Guardian article)

Content was the main film along with other media for Amazon and the Greater London Authority (GLA).

For the technically curious:

70sqm of 6mm pixel LED screen.
2 Macbook Pro’s running Playback Pro (Main, Backup)
1 Blackmagic Design Teranex
2 Calibre LEDView 530 (Main, Backup)

A few bits of cables and other boxes.