Great article at Robotics Trends can be found here. 10 Great Robots for Beginners features some great products, but I have to admit, my personal favorite is Number 4. You can find it at Parallax at this link. Of course, Number 9, isn't bad either!
Could there be any doubt? What a great way to learn robotics. I picked up a spare at the Shack last summer on sale for a great price too!