In Michael Cera's episode, shortly after he's introduced, the interview is interrupted by Reggie sucking on a Lego brick. Come early 2017, Cera lands a leading role in The LEGO Batman Movie.
One episode had Kid Cuddi star in a Jukebox Musical based on the music of The Temptations. There would later be an ACTUAL Jukebox Musical on Broadway based on the music of The Temptations called Ain't Too Proud: the Life and Times of The Temptations. Thankfully, though, it uses more than one song.