From Homestar Runner Wiki
The Holiday-Themed Set is a poorly constructed set seen in the holiday toon A Death-Defying Decemberween. On this set, Homestar Runner, Bubs, and Coach Z filmed a cheaply made Decemberween television segment to promote Homestar Runner's ride down the Steep Deep. It is implied that the television segment is filmed in front of a live audience; however, this is unlikely because the set seems to be inside a sound stage, making it possible that the "audience" is in fact a laugh-track. There are many supports that are slightly visible through the window and a very overt support revealed when the door is opened.
- Debut: A Death-Defying Decemberween