Hello Gillette!
A third voice emerges from the mist! Welcome to Puppets and Stuff. I too have been known to craft a puppet or two. I'd be happy to be considered for your project as well. Here's my Etsy site where I do have an example of a portrait puppet.
http://www.etsy.com/shop/PuppetsAhoy/You can also see samples of my work at my Facebook page.
https://www.facebook.com/pages/Puppets-Ahoy/247808478623939While the puppets from What About Bob are different from anything that I've done before I'd be happy to be considered for your project anyway. Those would be a carved or molded head with a simple fabric hand puppet body. I do have some training and experience in sculpture and would enjoy the chance to do something different!
If you're interested in discussing it further you can message me anyway you'd like. There's the email tab (the little envelope) below my avatar to the left here, my Etsy site, or you could leave a message at my Facebook page.
Three artists have arrived so far. Clearly you've come to the right forum and you won't be lacking for possibilities!