Ardipithecus (worth mentioning because it's never mentioned)
http://tolweb.org/Hominidae/16299
http://www.google.co.uk/search?hl=en&q=ardipithecus&meta=

Blogger Stephen Jones presents ideas he has read on the internet that maybe bonobos do not communicate significantly differently from other animals nor to any significant extent by human standards. That such opinions exist suggests that more could be done to present clearly what bonobos can do - and control experiments to show that it was not random 'communication';
otherwise, these other voices might become more believable: even though Panbanisha is spelled Panbonisha, and his time spent with a bonobo seems to have been brief, I get the gist of what he is saying and it would be nice to point to a resource (for lay people) which would quickly change people's opinion.
http://creationevolutiondesign.blogspot.com/ (Saturday Jan 20th 2007)
http://creationevolutiondesign.blogspot.com/2007/01/did-anyone-look-to-see-who-stephen-e.html

http://www.greatapetrust.org/research/general/panbanishaKanzi.php#
has a video clip of Kanzi performing instructions but, putting myself in the shoes of the skeptic, that is not sufficient. There really needs to be something that can stop someone from saying, "That was learned Pavlovian behaviour"