User:CmdrDan/Category; Guest of...

Why Not?
Guests on Television shows are listed in Lists of Episodes, but there's no way to see all of the people who have been guests on a show; what's needed is a category, something like so: Category:The Colbert Report: Guest Appearance

We gotta add a category like this: Category:The Colbert Report: Guest Appearance to articles: https://en.wikipedia.org/wiki/Edward_Frenkel