I bought Kingdom Hearts used sometime last year. At the time, I was very skeptical on how Disney could possibly mesh with Final Fantasy--after playing it however, I was quite impressed, despite the corniness ("Kingdom Hearts Is Light!!"). I've been checking out some previews of KH2, and it looks like it could be much better then the original--which has me wild with anticipation...
Oh, and I actually have heard of Oblivion, and while it does look fun, I don't think that it'll become as populer as KH2 is liable to be.