Two weeks ago, WB Games flew me out to LA to play two hours of Lego Batman: Legacy of the Dark Knight. As a long-time fan of the series (and a diehard Lego fan in general), I've been nothing short of ravenous to get my hands on it. Now that I have, I'm eagerly looking forward to the final release, especially since I gained a much clearer view of what this game actually is. First, a disclaimer: I played Legacy of the Dark Knight in a beautifully designed event space decorated with actual props from Batman films, and WB Games paid for flights and lodging for the trip. Add in my childhood nostalgia, and there will certainly be some unconscious bias in this report; still, I'll aim to keep my impressions as objective as possible. Batman and Robin pose on a rooftop in a shot reminiscent of the intro to Batman: The Animated Series. My gameplay demo began in a relatively early level.…