Re: Challenging, thrilling or scary acts
Roller coasters: They are great for adrenaline rush. Magnum, Draggster and Kick the sky, Demon drop kind of rides are fun. Even kids with appropriate height can do them. One has to keep the head fixed and rested on back support. Otherwise it csn cause dizziness or neck/back pain.
Nascar can be done at many motorways with an instructor and it makes person dizzy first time but after a couple of lapses its alright.
Ski from a hill is another fun. Just needs a bit training at training camp for a day or so. Wear dark goggles in sunny day, the snow is reeeaally bright!
Its really scary for few seconds but very thrilling falling from as high as 15 story height, hanging with a rope at some of these parks.
Another ride at Disney World is falling from 90 feet in to water called Slush Gusher. Just wear good swimming costume otherwise it may hurt ;-)
And lastly, the most fun one can have is flying a plane. Letting it 'stall' and catch it before 500 feet fall is part of the training. One maneuver is letting the plane hang in the air at minimum airspeed and then turn in circle (360 degree), gives a great control sense.