I'll show you qujibo!

I love the minimal but still completely recognizable version of the Simpsons here by Sehjo_vlc. I think Bart might be dropping a water balloon over the side.

Tornado

Blake's Baericks gives us this tornado.

microscale theater

Stacy Sterling presents this theater, inspired by the Town Plan set.

LL-186

Matthew Maulfair made this LL-186 Deep Space Freighter.

BrickFair

BrickFair 2011 had this micropolis display with over 45 modules.

Vizcaya Bridge

Jackie Britton presents the striking Vizcaya Bridge from Bilbao, Spain.

Starship Peacekeeper

Bladewood made the Starship Peacekeeper.

Daley Center

RoccoB also made Chicago's Richard J. Daley Center.

CNA Plaza

RoccoB made the CNA Plaza from Chicago.

Rampage

B. Ezra recreates the old Rampage video game.

Bogensperk

Subix made this beautiful rendition of the Slovenian castle Bogensperk.

Godzilla

Bobafrut used the new lizard-man fig as Godzilla.

Puerta de Alcala

Victor Martinez Nouvilas designed this Puerta de Alcala in the style of the Architecture line.

Bank of China

Simon Lu made the Bank of China from Hong Kong.

Brickville

Luap31 is building Brickville.

Chateaux

It looks like some members of FreeLUG (who?) were inspired by the Architecture line to build MOCs of various French Chateaus. One is clearly labeled as Chambord, but I don't know enough about these to identify the others.

Castel Del Monte

Castel Del Monte by Diabel:

A shipyard in only 10 pieces

Porschecm2 came up with this clever shipping dock as part of a challenge on Builders' Lounge.

Fleet

Commanderhawk made this carrier and destroyer.

PM racer

Harry Russell made this PM racer.

Launch

Pete Reid made this missile launcher.

Battlestars

I've been watching Battlestar Galactica on Netflix recently, so it was great to see these MOCs by LensFlareApp.
-Oops, thanks to Iain for the correction, the Battlestar is by El Barto. LensFlareApp helped add special effects to the image.

Micro city

Lisqr made this micro city.

Freedom Tower

Spencer Rezkalla made this One World Trade Center.