I could not pass up posting this great article from World History Journal written by Ramiro.
Execution by electrocution (usually referred to, after its method of implementation, as the electric chair) is an execution method originating in the United States in which the person being put to death is strapped to a specially built wooden chair and electrocuted through electrodes placed on the body. This execution method has been used only in the United States and, for a period of several decades, in the Philippines (its first use there in 1924, last in 1976). The electric chair has become a symbol of the death penalty; however, its use is in decline.
Flickr image by publicinsomniac.
Here is a book for more information, because this subject is just so interesting!