No, I thought Scott Adams (the guy who writes/draws Dilbert) had some weird brain -> muscle condition that meant he literally couldn't just casually chat to people. He could give presentations, and he could even sing, but when he tried to just talk to his friends his brain wouldn't send the signals to his neck. And then a couple of months ago something just "clicked" for him and now he can talk normally.
Or was it all just a dream? 
Nah. I wasn't even thinking about that. It was kind of an inside joke thing. I didn't actually know that about the guy. Other than his comics and now his blog, I knew very little about the guy.
Of all the comics out there, I'm actually more interested in Berke Breathed and/or Bill Watterson. I'm late to the show - I get interested in the cartoonists after they hang it up.
I knew a guy like that in high school, only it was with reading aloud. No problems with grades, the only problem with speaking was a very infrequent stutter, but having to listen to him when he was asked to read aloud was a slow death. Natch, I happened to have 2 classes with him where the teachers were complete and total asshats who I think thought they were "helping" him by making him read aloud so often.