Some patches has been applied to improve the experience on *XBMC* distributions.
*Dom Cobley* and *Ben Aviso*n are two gurus on the Pi platform. They both have been working on some improvement on *XBMC*, and the results you can see on the video: smooth movement in the menu and browsing through your media collection is now faster.
Hopefully soon they incorporate this improvements and can better enjoy our media center.
Source: [raspberrypi.org](http://www.raspberrypi.org/archives/4986)