Although we have never seen Joe enter Blue's Room up to this point, he seems instantly at home there.
The first episode to take place at night.
Polka Dots says the Word of the Day first, a job usually done by Fred.
The Playdate Spinner is not used. In fact, this visit is not referred to as a playdate at all. Also, "Way Great Playdate" is not sung.
Donovan Patton and Anthony Ortiz receive a combined Featuring As credit for the roles as Joe and Antonio respectively.
First (and possibly only) appearance of Joe (Donovan Patton) (Joe is Blue's owner and host on Blue's Clues, the show that Blue's Room started on)