As a plot point during the most recent episode of 'Law & Order: Criminal Intent', the detectives had to check out a scene from a movie in which a fictional actor appeared with Matt Damon. And during that scene, we actually got to hear the voice of Damon reciting movie dialogue which can only be found in the TV Universe.
So Matt Damon has established his fictional "tele-version" with a better credential than the cameo he did for the 'Saturday Night Live' hosted by Gwyneth Paltrow.
Whether comedy/variety shows like 'SNL' should be included in the fabric of Toobworld remains sketchy at best.
Sorry about that, Chief.