- A bright light or a beaming sun beaming right at us, although there is no risk of dammage to our eyes we intuitively squint
- A sudden pop up and disapearing of a big spider ("booh", never used this one though)
- A gun pointing at the audience (or less dramatic: a remote control zapping you away)
- Large close-up of eyes (beautiful, innocent, scary)
- Nails and a blackboard (makes you feel the chart)
- Looking down a roller coaster track, training coming at you, base baller about to hit a ball
- The list can go on
Image purchased from iStockPhoto.