The Claw Machines at Dave & Busters

Most of these are rigged but with special stipulations.  The black ones, marked PLUSH BUS, are only "slightly" rigged.  The way they get you is that the animals are stuffed down into the machine, making it hard to remove them. 

However the Claw is not loosened.  If you get the claw perfectly down on top of the animal, it will grab it and bring it up.  Don't believe me?  Look below.