How to relive childhood geekdom without the bullies, from the safety of your own computer.

LEGO TIME

We’ve decided to start a little something called Geek Mondays, where we explore the coolest, most fascinating, most diverse facets of geekdom.

So, fittingly, we start out with a wired version of a geek stand-by: LEGO, only digital design edition.

LEGO Digital Designer is a nifty little piece of free desktop software that lets you build 3D LEGO models right on your computer. We’re talking serious stuff — you can even go all Nathan Sawaya on it…except, of course, you’d have to eventually shell out some cash for the pieces. Which is actually another neat LDD feature: You can buy the pieces with the click of a mouse directly from the LEGO store once your model is complete, so you can start laying it out on your dining room floor, to your girlfriend’s utter horror.

So download this bad boy and find yourself a new favorite timesuck that puts your Second-Life-and-Digg diet to shame.