Oblivion is the only Elder Scrolls game I've tried, but man, what a ride it was! It's been quite a while since I last played it though, so maybe I should start a fresh new playthrough and get my fix of nostalgia.
Do you have a favorite soundtrack(s)?
Sure do, it's Through the Valleys. It brings back so many memories of exploring Cyrodiil on foot, harvesting random plants, discovering caves, Ayleid ruins and Oblivion Gates etc. As for a combat track, Churl's Revenge has always been my favourite.
Favorite quests?
A Shadow Over Hackdirt (the one where you rescue the Argonian princess from the basement of one of Hackdirt's many ugly scoundrels) and Through a Nightmare, Darkly (where you go to Henantier's Dreamworld and fix his brain). Oh, and now that I remembered, Molag Bal's quest was really cool too.
Favorite city, area? Why? What feelings do you have about it?
Chorrol, specifically my house in Chorrol. I've spent so much time in there that it is almost the first thing I think of when I hear about Oblivion.
Maybe share your characters and something about them?
Here he is, my latest character, Ole Arrow (his head does look something like an arrowhead from the side). I could share my other character that I've mostly been playing with, but that one is the most boring Imperial you'll ever see. Like really, other than his hair, I don't think I've customized a single thing about him.