The Cul de Sac cartoonist announced on his blog today that he is suffering from Parkinson's:

For the last year or so I've noticed a few odd symptoms; shakiness, hoarseness, silly walks, random clumsiness and the like. So the other day I went to see a neurologist and, after having me me jump through hoops, stand on my head and juggle chain saws, he said I've got Parkinson's. It's a pain in the fundament and it slows me down, but it hasn't really affected my drawing hand at all. And it could be a useful ploy in my ever-losing battle against deadlines.

If you happen to see him at San Diego next week, please say hi and wish him well.