Kenneth the page had wiped most of it away, but we did see scrawled on his dressing room wall:
Williams himself was never seen, but he didn't have to be. The state of disarray in his dressing room pretty much summed up the man as a fictional being. Still, that's all it takes to add to the presence of his tele-version in Toobworld - some kind of reference to his or her existence.in a fictional series. Appearances on talk shows and comedy shows like 'Saturday Night Live' and 'The Daily Show' don't do much to fill out his "resume".
But this "appearance" on '30 Rock' is the step in the right direction, even if it pissed him off.
After all, he doesn't want it getting around that Katie Couric got into the TV Crossover Hall of Fame and he didn't, does he? (Katie already has three appearances as her herself, the minimum requirement for membership - 'Murphy Brown', 'Cheers', and 'Will & Grace'.)