This may come as a shock to some of you, but… I'm a geek! Geeks are marked by a natural inclination for complex, involved toys and expensive, solitary hobbies. But in between building the ultimate gaming PC or tinkering with Arduino kits to make custom Christmas light patterns, there's one hallmark geek toy that doesn't get brought up much.  I'm talking, of course, about Lego. Sure, we all remember the canonical brick building toy from our childhoods. Back when Legos just came in a loose bucket of…