LG Hom-Bot "Dirty Nightmare" movie 

This is a beautiful, but sad story of the last dust in the dark corner... It is a Dirty Nightmare.
The cleaner's unique square design, hi-tech sensors and newly improved brushes are collectively called Corner Master and enable HOM-BOT SQUARE to more effectively reach areas that other cleaners simply ignore. Corner-detecting sensors supply the cleaner with spatial information, telling it when the edge of the room has been reached, when to turn and when to stop.
Find out more information at www.lg.com.