As was mentioned a year or so ago there is a company called Gemmy which make animatronic manakins. At that time people were talking about an animated snowman. Well a visit to Gemmy's web page shows that they make all kinds of these creatures. The biggest problem is that they don't sell to the public but I did find some for sale on Ebay. I bought a 6' tall skelleton for $69. He talks, sings, moves his head from side to side and dances, well sort of. What I plan to do is try to strip off the head and cover it with aluminum foil so that it looks like it is made of metal and use it on my robot so that it looks more like a robot. The robot has two brains, one to control the motions of the bot and the other is Hal so I can carry on normal conversations with it in the mean time.
I will let you all know just how well it works when I make the final modifactions.
Bill