I heard on the news the other day that Southern California now has its first zip line. Zip lines are popular tourist attractions in Costa Rica, Hawaii and various exotic locations, and now we can zip line in Big Bear.
A zip line basically allows you to "fly"through an area, usually a forest, at tree top altituldes. If you're afraid of heights, this probably isnt' the right activity for you, but if you're the adventurous type, it is definitely something worth considering.
Not sure what the zip lines are like in Big Bear, but if you can't get to Costa Rica or Hawaii, zip lining through Big Bear is a good alternative.
For more info, visit: http://flyingbearziplines.com/