art forums:

• ww.conceptart.org
  
  

art galleries:

• CGChannel
• Gfx artist
• 3D Arist

unordered:

• www.rustboy.com - a great animated short in the making
• www.dvgarage.com - Highly recommended to any 3D arist! These great guys have great tutorials and great products!
• www.starwars.com - no explanation needed here!
• Carles Piles 3D art - Great 3D artist with neat lighting tutorials
• CGTalk - 3D forum and gallery