The plot was a blazing failure, since Fawkes was then discovered in the cellar with the gunpowder. Fawkes' end was typical of treasoners at the time: he was hanged, drawn and quartered. Meanwhile, Londoners were encouraged to light bonfires to celebrate the king's escape from assassination.
Today, enjoy a bonfire, light a candle, read a little something on English history or current English politics. Just don't blow up any members of Parliament.