Synchronization of Sight and Sound

Some may argue that taste and smell together are best, but for me it's sight and sound.

Those surprise moments when the song you're listening to is exactly in time with your windscreen wipers. Or flashing lights. Or anything.

Can be used phenomenally well in music videos, see the works of Chris Cunningham, or Michel Gondry. The best example probably being the Michel Gondry video for the Chemical Brothers - Star Guitar, but it's also viewable - although to a lesser extent - in the way Pedro Romhanyi utilises video loops to illustrate the sampled loops of the Wiseguys in their Start the Commotion video.

See also synaesthesia.