Serana is teh awesomeness. Pretty much the best vampire ever IMO. Such a lovely lady. My favoritest companion in Skyrim. I still love Lydia, but Serana is just too loveable.
Game: The Elder Scrolls V: Skyrim
See my other favorite NPCs here: [link]
EDIT (2012.11.24): Damn, 100 downloads? That might not be a lot to you, but that's a shitload to me. Thanks!
EDIT (2012.12.17 @ 17:30): WTF? 165 downloads in a day and only 19 views? Awesome!
EDIT (2013.03.18): Today is officially the day (or at least the day that I noticed) that the download count surpassed the view count. How that happened is beyond me, but that's awesome anyway.