LucasArts has released a PC demo of LEGO Star Wars II: The Original Trilogy.
LEGO Star Wars II continues in the same vane as the first game, retelling events from the final three chapters in the motion picture series. In the demo you'll get to play as Obi-Wan or Luke as you battle through Mos Eisley in part of Episode IV. In order to escape you need to hook up with Han Solo and make your way to the Millennium Falcon.
The demo is a moderate 438MB and should offer a nice taste of what to expect from the final game, due to be released later this year.