While at the CMIS PlugFest held in Basel (Switzerland) in April 2009, I managed to quickly get my Flip out to record some videos of the demonstrations of the interoperability between client and servers. The videos you will see here are organised by CMIS client implementations. Please excuse the low quality of the audio and the sometimes difficult to read screens, I hadn't planned to do this but I thought it might still be interesting to watch for all that weren't present. I highly recommend, if you have the bandwidth, that you view the videos in HD, it will be easier to read the screens.
So here are the videos :
 
SourceSense CMIS Portlet client

 
Flex CMIS Explorer

 
Javascript Chemistry CMIS client

 
Alfresco JUnit CMIS Testsuite

 
OpenText Windows CMIS integration

 
SAP ECM Explorer CMIS plug-in

 
Unfortunately I don't have a video of myself (I was first to talk and it's kind of awkward to talk and take of video of yourself :)) talking about the integration I wrote during the CMIS PlugFest, but what I said was mostly that it could connect and navigate both the Jackrabbit Chemistry and Alfresco repositories. It is a goal for Jahia to work with Apache Chemistry to be able to talk to CMIS repositories, and also expose it's own repository through Apache Chemistry.
Let me know if you thought these videos were helpful, I might make some more regularly in that case.