Have you ever gone zip-lining?

I was visiting a lot of friends on my vacation.  While in Delaware, I had the opportunity to go zip-lining for the first time so I took it.  It was fun.  There was an obstacle course before the actual jump.  One of my friends didn't want to go and she refused to let her husband go.  He was not happy.  I was not happy for him.  She needs to take his b*lls out of her pocket.  But that's another story for another time.

Have you ever gone zip-lining?  If not, are you willing to try?  
I found a local place that has it and I'm thinking of going again!