Animate a Charachter

I have a cartoon charachter that we have displayed on our website which we are still developing, and we would like to have him animated and speaking, the idea is we want a small clip which will loop where the charachter will welcome the visitor to the website and give a 60 speak on what we do. as well as the charachter speaking i would like him to move or more fidget, may be way around his pointer or something. Our site is already loaded with Jquery and flash and so we would need to keep everything to a minimum as well are thinning out our website to reduce load times. The idea is that the charachter will form a major part of our development and will be our host on presentations and promotional videos etc and so we would like to build a continual relationship with a company or individual who can do this work for us as well as who maybe able to undertake some work on behalf of our clients. Our web address is [login to view URL] and the charachter is the professor at the top of the page next to the three boxes. Please supply demos/portfolio of your animation work.