These are the best of the best...

HD Sports Car GT Racing
YouTube - GoPro HD HERO camera: Pro Sportscar Racing

Paintball Rush
YouTube - GoPro HD Paintball Test

Base Jump
YouTube - GoPro HD HERO camera: Base Jump Movie

GoPro Surf & BMX Slo Motion
YouTube - GoPro HD HERO camera: Slow-Motion 60fps Clip

USC Ski Throw down
YouTube - USC Ski & Snowboard - Mammoth Nov 20-22 HD

Mountain Bike Mix up
YouTube - GoPro HD HERO camera: Mountain Bike Clip

GoPro Ski video w/ Techno
YouTube - GoPro HD HERO camera: The Ski Movie

Motocross woods riding Xtreme
YouTube - GoPro HD HERO camera: MX Tree Run

Moto-X Mix Tape
YouTube - GoPro HD HERO camera: Moto Highlight Movie

Formula In-Car
YouTube - GoPro HD HERO camera: Formula Car Clip

GoPro Large Surf Compilation
YouTube - GoPro HD HERO camera: The Surf Movie

Cool Snowboard GoPro shots
YouTube - GoPro HD HERO camera: The Snowboard Movie

Amazing TORC Dirt Racing
YouTube - GoPro HD HERO Camera: TORC Offroad Series Finale - Las Vegas Night Race

Race Boat
YouTube - GoPro HD HERO Camera: Boat Crash

Ronnie Renner tearing it up Moto X style
YouTube - GoPro HD HERO camera: Ronnie Renner at the MX Track

Sick Snowboard video (not sure if this is GoPro)
YouTube - one of the best snowboard videos ever

Best Action camera and best video camera for the $ hands down.

Enjoy