We’re not sure how we missed that Brickfest 2005, a “celebration of Lego creativity” that highlighted creations by talented Lego builders, was happening in our own backyard this weekend at George Mason University, but we did. And now we are sad. Because it looks like it was totally fun. A Wired article we ran across talks about Brickfest and highlights the obsession and attention to detail that results in the creations:Arthur Gugick, a teacher from…