Take a look at this render from a beta of nvseal's upcoming planet packs. This render is a combination of the space shot (green planet flavor), global displacements and global cloud systems module.

Look at the amazing amount of detail everywhere. Look at the great planetary cloud system.

I must admit I have just taken these presets, plugged them together in the network, chose a position and hit render. No tweaking on nothing. I am amazed, I thought I should share the render result here.

Oh, and make sure you look at this full size (4000px wide)! Made with 100% pure Terragen 2