XPenguins animates a friendly family of penguins in your root window. They drop in from the top of the screen, walk along the tops of your windows, up the side of your windows, levitate, skateboard, and do other similarly exciting things. XPenguins is now themeable so if you are bored of penguins, try something else. The themes that come with this package are "Penguins", "Classic Penguins", "Big Penguins", "Turtles" and "Bill". XPenguins works by drawing on the X root window. This might not have the desired effect in modern desktop environments like Gnome where the root window is not visible.