Long Boarding is really fun, I have a cruiser board my self and bomb the occasional hill and just skate around with my mates. I reckon all that really advanced longboard stuff where they do the varial flips and all that on these huge boards is pretty cool but it is not my scene anyway. I find the videos of bombing huge hills really crazy, as you have so much potential to eat shit when you are going that fast. But if you can avoid the death wobbles you are set. I am pretty interested in bombing big hills and have done my fair share of decent sized ones but to go down the really big hills it is best to have sliding gloves but I just tend to carve from left to right to pace myself down if I need to slow down.
Here is a weird Aussie longboard film/advert thing. I think it is pretty cool