Shooting in the dark - Park at night

I braved the cold tonight and went out to do some night photography. I ended up in a park about a block from my house. The guy walking his dogs must have thought I'm totally crazy taking photos of trees in total darkness. Hey you're walking your dogs in the middle of the night, I can take my camera out for some fresh air too! He disappeared when I started firing my strobe flash on full power at a tree. Kinda looked liked an outdoor disco with these brilliant white flashes lighting up the whole park every couple of seconds! (I'm not weird, it's called creativity)

Anyway, the above photo is a combination of 3 photos, 2EV stops apart, merged together to form a 'high dynamic range' photo. (if you don't know what this means, just look at the pretty picture!)