I didn't always agree with Dennis Dutton (such as his strong belief in compulsorily funded state radio), but beyond that he was a strong advocate for reason and science.
He passed away today (28 December) of cancer (thank you Homepaddock for the news). He debunked many paranormal fraudsters, had an open mind about climate change and supported science and evidence over mysticism and the new age snake oil merchants. He will be sadly missed.
His websites here, here and here. No doubt more will be written about him elsewhere in a few more days.