I was very intrigued when I saw the possibilities ENB would bring to Skyrim, so I've used Yadda's Realistic ENB Config v1.021 as a starting point to create my own config.
The first thing I had to turn off was indirect lighting (which is used by many great presets, including Gionight's much sought after version), as it immediately brought my system to its knees, with like one frame every 3 seconds or so. I've tried to come up with a more naturalistic, soft (not too blurry) look for skyrim, not as contrasty (or "punchy") as many of the other configs I've seen around. Also the nights should be dark, but still "playable", while still having the whole thing run fluidly on my relatively modest setup (Intel Core2 Quad Q9400 2.66GHz, 8GB RAM and a Radeon HD 6800).
Comparing my preset to some of the others here, I guess this look won't be everyone's cup of tea - it's sometimes foggy and not as bloomy, bright and colorful as others.
You can find some screenshots below (and a lot more shots can be found HERE). I guess the final appearance depends massively on your monitor setup, so these shots might very well be too bright or dark on your screen. I'd say the brightness slider in the game could be the final tweak to push this preset to something you might like. You can download the complete preset RIGHT HERE.
On with some sunny daytime shots (of an early version, as by now I've found settings to get a sun I'm happy with):
Some overcast shots:
Dusk, Interiors and Nighttime:
