Planned to be released in the second half of 2010, Lego Universe is an MMOG that will let players earn weapons by completing quests – the better the weapons, the more powerful their characters will be in battle.

The trailer itself shows an exhilarating battle between good and evil, and boasts some very cool sequences where the Lego characters build objects in slow motion (01:01).

A nice compilation showing the use of the chroma key technique in some popular TV and films. Using green or blue screens in the background, actors are shot and then composited into purposely shot footage from on-location by removing the chosen colour. This means production companies can save money by shooting footage in studios rather than closing down famous landmarks like Times Square (03:43) in New York.