Two of the best features of Adobe CQ5 are a) the extensibility of the architecture, and b) the great user experience for content producers / authors. A great example of the two coming together is the new package for CQ5, which integrates the video streaming platform Ooyala into CQ5.
Adobe & Ooyala partner Siteworx were able to easily create a reusable integration package to allow anyone with both CQ5 and Ooyala to combine the two quite easily.