HARK looks like an interesting project to determine the location of sounds, this would allow the robot to associate speech with the speaker.
Here is some more tennis ball collection efforts from tennisrobot.org, a group of engineering students at the University of Waterloo.
This is a beautiful, and terrifying view of the future. Robotic Velociraptors chasing the last of the humans across the deserts after the end of the robot wars. This mechanism could also be a great inspiration to roboticists looking to design compact hexapods.
I wish my apartment was this big.
That is an amazing teleoperation setup.
On a related note, I would also like to give a special shout out to the OpenShot developers for making the stable and useful OpenShot Video Editor for Linux. Let us know if you see any other great robot videos.