I have been playing Oblivion on my 360 for nearly two years. After years of playing FPS, Action Adventure (Metal Gear, etc.) and sports games I am starting to feel a pull towards RPGs. I prefer Oblivion over every RPG I have ever played, including Fallout 3 which I feel is not nearly as good as Oblivion. That is really just my personal preference as I think Fallout 3 does deserve the recognition as one of the top games of all time.
Great to find a mature ES community here though!