I would have posted sooner in this thread, but so many of you have shared similar "wow" moments to my own and I didn't want to repeat ^_^
This game has left me with my jaw dropped more times than I can count- whether it be because of the beautiful landscapes, exciting quest moments, random events, or just the sheer detail that's been put into it. I'm a very visual person and believe that sometimes the smallest of detail can tell an entire story.
I don't know whether I'm alone in viewing videogames this way because I'm an artist in real life, but walking through Skyrim is not only great fun, but very touching in a way. When my character is running through a forest, I don't view it as me just running through a forest, but instead, me running through a 3-D collage painting made up of the ideas, imaginings, and hard work of tons of artists. It's the closest thing to being inside of someone else's head, in my opinion. Okay, I'll stop being cheesy, I promise.
Anyways...my most recent wow moment was during a Companions quest. While looting bodies, I noticed one of the bodies had a book on them. It was easy to miss because his body was all the way in a dark corner. It was one of the books in the game that belong to a series. It just so happened that the volume they were carrying related to the Companions. I know, this might not seem too interesting, but I just find little nuances like that to make for an added level of intrigue.
I also enjoy walking into the local inns to eavesdrop. Just last night while playing, my character went to go cook something in the Bannered Mare. As my character was cooking, I could overhear a few conversations taking place in the other room. Instead of turning up the volume, I instead leaned in to listen. In that moment, I felt like I was really in the game.