I assign to Mordor:
The bus ticket machine next to Marble Arch tube station that ate my last £4.
The train on the Jubilee line that had me in fear of my life with it's abnormal level of noise and turbulence.
The coffee machine in Belsize Park hostel that either gives you half a cup of coffee, or causes the coffee to overflow.
Airplane seats. Not the one I sit in, but the one in front of it!
