This is one of those viral things that make you go: “O.M.G.!!!” Marky Mark on YouTube shows two short videos of his special LEGO project.
He built a remote control replica of the StarCraft II Crucio Siege Tank which goes into siege-mode. You can see the Siege Tank actually spreads and anchors to the ground to deploy the shock cannon.
The first video shows the LEGO bare bone which allows you to see the robotic mechanism. The second video shows you the remote-controlled Siege Tank in action.