A colleague pointed this website out to me yesterday. Voki is a free website that allows you to create animated avatars for use on websites, blogs, and from what I read can be embedded into Powerpoint too. Haven't checked it out fully yet but it is aimed at teachers and students. The website announces "Create speaking avatars and use them as an effective learning tool. Motivate students to participate, improve message comprehension, introduce technology in a fun way, utilise Voki as an effective language tool.." There are lesson plans on the website and ideas on how to use Voki in the classroom. Reminds me a little of Crazy Talk which another of my colleagues loves using in the foundation phase classroom.
As they say on 'Blue Peter', "here's one I made earlier"