I saw him ride live a couple of times before his accident, I always thought he was amazingly skilled and agile for a guy who was obviously a bit older than those he was performing with.
I saw him at the London bike show this year, and felt a bit sad seeing him in his chair, however I read an interview with him a few months back where he said he was determined to get back on a bike, and I totally believed him.
His determination/positivity is very inspiring, and he come across as a proper nice guy.