Answer:
The list is long:
Skateboarding (Street and Vert)
BASE Jumping
Bodyboarding
Extreme Canoeing
Cliff Jumping
Freestyle motocross
Hangliding
Ice Climbing
Jet Skis
Kitesurfing
Le Parkour: Free running
Extreme Biking
BMX: Vert, Street, Dirt, Freestyle (Flatland)
Trials: Downhill, Freeride, Northshore, Slope Style and other
Paragliding
Rock Climbing
Sand Boarding
Sand Kiting
Extreme scootering
Extreme Skiing
Snowboarding
Snowkiting:
Surfing:
Windsurfing
White water rafting
Wingsuit sky diving