GoPro has recently released the LCD screen (the "LCD BacPac") for the GoPro Hero HD camera. I just got mine, and played around with it a bit. Using it required a firmware update, which was very easy. No surprises anywhere: the screen looks good, usage is as simple as using the GoPro in general. One nice feature us that the LCD screen now gives explanations when you want to change the settings, so you don't have to remember all the 3-letter codes. The cost of $79 is very reasonable. It comes with 4 backdoors for the housing - waterproof and non-waterproof versions for the normal mount and the wrist mount. Swapping the back doors is easy and takes less than a minute.
The LCD screen should greatly increase the usefulness of the GoPro for learning new tricks, since you'll be able to review movies right after taking them. Just mount the camera to the boom, try the trick, and check the movie to see what you did right and wrong. It's almost like having a boom-mounted Andy Brandt - I can't wait to try it.
Some Reader/Rider Feedback
2 days ago