For anyone unfamilar with the Corpus Christi Clock (more correctly the Corpus Clock), mentioned at the start of the video, here it is.

Described by at least one commentator as "deeply disturbing", the clock is made chiefly of steel, aluminium, 24-carat gold and rhodium and is only accurate once in any five-minute period - it speeds up or slows down, sometimes slowly and at other times very rapidly, then at other times it stops completely and the pendulum suddenly freezes at a random point in its arc and will remain in position for a few seconds; when it restarts it can do so slowly or quickly. Its purpose, according to designer John C. Taylor, is not to tell the time but to remind us that time is not our side.

The grasshopper escapement is called The Chronophage, but locals call her Rosalind - she has moving, blinking eyes and gnashes her teeth as she eats the passing moments. The clock was unveiled in 2008 by Professor Stephen Hawking, and chimes the hour by dropping a chain into a wooden coffin.

Wonderful talk, thank you for posting it. Its a cold wet day here and that was a good hour to start the day.