Central - Mid-Levels Escalator

I spent HK$1.70 for the ferry ride from TsimShaTsui to Central, heading to IFC. After getting half-price movie tickets ($40/ticket) for this Sunday (Da Vinci Code) at the cinema, I explored a bit of Central by taking these Escalators. It always amazes me that this structure is built to serve just one purpose, people mover. In a dense urban area, these elevated walkways are neccessary to alleviate pedestrian traffic from the roads.