Who says you have to have an iPhone 4S to use Siri? The first video shows it on an iPhone 4 (which has been reduced in price since the 4S was released). Check out the rest of the vids too.

View more daily video round-ups here.

Siri enabled on an iPhone 4:

Another conversation with Siri:

A robot uses Android Speedcuber to solve a Rubik’s cube:

Shampoo Robot:

Robot ping pong:

Gary Vaynerchuck and Eric Ries talk “The Lean Startup”:

Meat Cthulu: