Goddamn, the reasons I love Walken just keep multiplying.
From the Ellen DeGeneres Show:
When i was a kid, I always resented …when I was in school …having to put the period here and the comma here …I felt that it was an imposition …so whenever I wrote anything, I would write it without punctuation. And guess I grew up ending up that way.
Watch it at around the 4 minute mark: