Jon Hamm, who plays the Preacher, was Ellie Kemper's acting teacher in Saint Louis, Missouri
The "National Anthem" Titus sings for the news cameras is the original theme song of "America's Funniest Home Videos" (1989).
In the video at the end, in the videos on the side one shows 'Tracy Morgan's aquarium'. Tracy Morgan played Tracy Jordan in Tina Fey's previous show, 30 Rock.
The two defense lawyers, Marcia and Chris, are parodies of prosecutors Marcia Clark and Chris Darden from the O.J. Simpson trial.
In the "Gonna Be Famous REMIX" video at the end, another video that can be seen off to the side is "Daddy's Boy" the movie/musical that is shown in S1EP10. The video is also listed as NSFW (Not Safe For Work). The video is marked as being 5:56 minutes long and it can be safely assumed it shows the entire movie as they make it clear that the movie stops in mid-song because it was so terrible. It has 2,025 views which for some reason is the same number of views at the "Make-up Tutorial" video also shown on the side.