I love looking through this thread, there are some pretty damn awesome screenshots here. I don't really know enough to make my own enb preset, and honestly, I'm too lazy to learn
But since there are hundreds of presets to be downloaded, I settle for just occasionally tweaking one of them so they fit my taste (and my crappy monitor).
I recently found Guzio's preset, Rudy ENB and I totally fell in love with it. I'm trying out different recording and editing software so I can learn to make better quality videos and I made a short video using Rudy ENB, I hope that's okay. Of course, a lot of the quality got lost even though I recorded in 1080p, because...well...youtube, do I need to say more? So the video doesn't really do the preset 100% justice, and it looks more saturated during certain points in the video, than it does for me in-game for some reason.
Anyway, here's a link to the video in case anyone is interested
http://www.youtube.com/watch?v=_xKJ3P6ZU4g