I found on Ebay a Sir Galaxy robot that looks prime for hacking with Ez-B. Take a look sometime. Here is a brief description:

Transmit your voice from the Remote to Sir Galaxy! (excellent for sending those R2D2 sounds if you hack its remote) Arms are poseable with spring loaded hands. (prime for servo transplant) He can walk forward, turn left or right using his remote control! (or ez-b) Makes space sounds using the "alert" button on the remote or on top of his head. His eyes flash when the "alert" button is pressed. (replace those eyes with something cool)

Oh yeah the Tekno Dogs MAY be hackable but might be tight inside. Never opened one.