I put about 100 hours into Oblivion when it first came out, and then lost my save game in an unfortunate hard drive incident. Then I got into WoW and other games and didn't come back until I heard that Skyrim is coming out. The first time round I played a virtuous basher paladin -- never joined the Dark Brotherhood or Thieves Guild, never committed a crime (that I can recall). This time I'm playing a stealth marksman, and the first thing I did was go looking for the brotherhood and thieves. With the brotherhood, I'm finding it almost diffucult to do the quests as they become more and more evil. And that's what's so brilliant about this game -- it's so open, not just as a world, but in terms of moral choices and decisions. That those decisions can make you sit back and pause before you plunge forward.
I put about 10 hours into Witcher 2 before I realized it's just not my cup of tea. It seems just a series of scripted events that don't mean much to me. So I came back to Oblivion last night with a sense of relief. Jauffre is currently stewing in his mountain fortress, and I'm just going to leave him there this time around. Too much else to do. God, what a great game. I'm glad I have several months to explore it properly this time before Skyrim comes out.