In light of the thread about this forum being messed up, I can understand. So I want to bring this thread to life.
Basically, the first experience on a bike that got you into wasting thousands on high end components
When you were so full of adrenaline from the flowing track you just couldn't stop, you wanted to pedal back up the two miles of road to the trailhead and do it all again.
For me, when I was a (comparatively) wee little child, some of the older kids made a jump out of some strong plywood and cinderblocks and they let me ride off of it. That got me to lure my friends into getting mountain bikes.
We headed down to a big "dirt pit" in Shoreline Park in Mountain View, CA (for those in the area, I think Pheard lives in the bay area?) where some jumps and a small track that resembled a pump track was set up. i had the time of my life there, and persuaded my dad to take me up into the foothills on some of the XC they had there.
I just kept doing more and more from there.
Post up, have fun in the rememberance!