Quirinius is so cool.
Infinitely scrolling horizontal theme with any post height (hint: if it exceeds the window size it'll be reduced to fit, so if you want the theme to always be as high as the window put this value at 9999). Scrolling boxes for long text posts and corner permalinks for photo posts. Even photosets fit properly! And videos are the right aspect ratio. And there are captions now too! Sorry for getting so excited, but this is really cool, definitely worth the update.
As usual it has twitter in the sidebar.