Jack Webb was unrecognizable in this

I watched SB for the first time last night and saw Jack Webb's name in the opening credits. I kept looking for him and never saw him. Then the closing credits listed him as Artie. I went back to the New Years Eve scene and watched it again. I still hardly recognized him. I was so used to his straight-laced Joe Friday that his Artie beatnik with the longish hair really threw me for a loop.