Art of Blender
The Art of Blender is full of inspiring renderings from Blender artists around the world.
In this Blender 2.6 video tutorial, we take a look at using the Ocean Sim modifier in conjunction with the Cycles render engine to create a gorgeous ocean scene. This tutorial covers the entire process needed to create the final result, including generation of the ocean, the sky background, rendering in Cycles, and setting up the composite nodes to create the final effect.
Note: I mixed up during the tutorial, and wrongly attributed the Sky Texture. The actual author is David Keyes, and the texture comes from his sky pack that you can download here: http://blenderartists.org/forum/showthread.php?224065