Along with the big Star of Bethlehem conference in Groningen, I was in Cologne before that to give a talk about the same subject to Skeptics in the Pub. That talk was also recorded and edited nicely by the folks there, and that is now up on YouTube. (Note: the intro is in German, but my talk is in English.)
Only downside with this was that I did not do my best to stay close to the microphone, and that means my voice goes in and out a fair bit. I’m used to talking with my voice picked up by different devices, so I’ll need to remember that for the future. Still, you can get all the contents of my talk reasonably well, and the presentation went really smoothly. Plus, great folks at SiTP Koeln. They had some really good questions, but it doesn’t look like the Q&A was recorded.
I also didn’t know this before I went there, but Cologne is the city were, allegedly, the bodies of the Three Kings/Magi are kept; the city’s coat of arms reflects this, and the cathedral with those bodies is a UNESCO site, and it is a lovely building.
Also, the holidays are approaching, so if your group needs a speaker on a timely subject, let me know.