I've seen a few interviews with him recently
What a really nice guy he seems to have been. Nice sense of humour, too. Tobe Hooper struck gold when he cast him as Leatherface. Not only was he big (6' 7" in boots, and close on 300 lbs) but he had a remarkable way of moving - fast and efficient but at the same time looking almost uncoordinated. Perfect.
RIP Gunnar.