Seven is the lucky number for fans of both Lego toys and Star Wars films, as a free 516MB demo for Lego Star Wars II: The Original Trilogy is now available on Xbox Live Marketplace as part of day seven of Microsoft's Bringing It Home promotion.

As Microsoft readies itself for its X06 event, which begins tomorrow in Barcelona, Spain, the company has also released several trailers for a few games that have already hit stores and a few that are right around the corner. Now ready for download are trailers for NBA 2K7, Sonic the Hedgehog, Shrek 3, Just Cause, NHL 2K7, and The Darkness and a look at the physics and damage systems in Forza Motorsport 2.

Microsoft's Bringing It Home event runs through September 29.