Yesterday, I took a trip with some friends toSix Flags Great Adventure, where we spent the afternoon riding roller-coasters, something I haven’t done in years. It was a complete blast, a reminder of how much fun roller-coasters were when I was a teenager, and a revelation in seeing how advanced they’ve become in the years since. The best was Nitro, followed not too far behind by Medusa. There’s some great video of the Nitro ride over at the Discovery Channel’s Web site.