Purim is coming, and to help you celebrate the Megillas Esther app (available here) lets you read through the entire Megillas Esther with added electronic effects. You can scroll through Hebrew text verse-by-verse with the flick of a finger, then tap buttons that let you add noises at the appropriate times. Sound the grager, fire machine guns, hear the crowd "boo," shoot off fireworks, and blast an airhorn.