Oh... My... God

 I can't even begin to describe how beautiful this is. Carlyle Livingston II and Wayne Hussey spent over 800 hours putting together this Batcave. The cave itself is comprised of over 20000 individual elements, weighs over 100 lbs., and has motorized parts and its own lighting system! These men are gods to me.

Super Bitching Shield

 Hylian shield from the Twilight Princess by Remi (Bolt of Blue)

LEGO Wheelchair

 This Lego wheelchair is powered by Mindstorms and can support up to about 200 lbs. (90 Kg). 6 NXT's are used to control the drive motors while a master controls the direction. Each driving NXT has 2 motors and 2 touch sensors for direction, while the master has 4 touch sensors to control direction and 2 motors to switch on the driving touch sensors. Support for Android and Bluetooth is currently being worked on.

Source

17-Stage Ball Contraption

 This amazing Lego machine, built by Skiyuky, does a very simple task. Moving balls along a complete circuit. That is all it does. But it does that task in such an amazingly cool way. And it's incredibly accurate.

Rivendell - Home of the Elves

 This is... beautiful. This masterpiece is the result of a collaboration by Blake Baer (Blake's Baericks) and Jake Bittner (Bitts and Pieces), which was shown at BrickFair this month.
 Here's a video of set with all its details on display.

The Amazing Spiderman

 Super cool posable Spiderman, by mccooey.

Faerie Forest

 The "Faerie Forest," made by Sean and Steph Mayo (Siercon and Coral). I love this because of how intricate it is. It's just so detailed and, in some parts, beautiful.

Noble VI

 This is pretty cool. Noble VI by Mike Nieves (retinence).

Super Awesome Batman/Joker Mosiac

 You may know Arthur Gugick (torgugick) from his Anakin/Darth Vader lenticular mosiac. Well, he's back with this amazing Batman/Joker lenticular mosiac. This is just a quick post so no embedded video. You'll have to go look yourself.

Happy Birthday LEGO!

 80 years ago, in 1932, Ole Kirk Christiansen started making wooden toy in his workshop. In 1934, he named his company "Lego," from the Danish phrase leg godt, meaning "play well." In '47 they began producing plastic toys, and then in the year 1949, the "Automatic Binding Brick" was introduced. And the world was then a better place.