He was extraordinary. Joking about doing stand up comedy about the good things about having cancer (and I think he may actually have done that in his home country of Belgium). I hanged out with him during CGW #1 and CGW #5 and he had an amazing energy and was full of laughter and jokes.
Seeing Daan do all that hugging during CGW #1 inspired me as I had a hard time doing that, and even my hug to Daan at CGW #1 was kinda standoffish. So I took his inspiration and worked on the issues and went to CGW #2 and hugged a huge bunch of people. Thanks in part to his inspiration, I'm a lot more huggable now and I was able to give him a really good hug during CGW #5.
I hear in the news sometimes about people who die and everyone around them are like "Wow, he was such a wonderful spirit and so positive". I was skeptical reading that about other people, but here that's so true. He will be very missed.