Two words: Robot + Disco.
If you’re still reading this, and not playing Frobot, you probably never will. Just in case I can convince the non robot and disco fans out there, this is a kind of shoot ’em up. It’s free, and plays in your browser with Flash. You control the Frobot, on a mission to save boring suits and government agents from themselves, and turn them into party loving disco dancers. Move with the keyboard, and aim with the mouse. You have to be careful – once you shoot a suit, they turn into a dancer, but will die if you shoot them some more! The music’s cool, the robot’s cool… it is a bit tough, but I can forgive that, as it’s got robots and disco in it!