The characters' Halloween costumes in "Darby's Halloween Case" were as follows:
Darby - Cat
Buster - Lumpy
Tigger - Rabbit
Pooh - Vampire
Piglet - Super Sleuth
Turtle - Jack-o-Lantern
Porcupine - Fairy Princess
Rabbit came dressed as himself, though Tigger forced a clown nose onto him. Once Darby, Tigger, Pooh and Buster got changed for their Super Sleuth case, Darby was the only one of them who retained any elements of her costume.
Given its Halloween theme, this episode will repeat a number of times after its original broadcast on Playhouse Disney, including on both the day before Halloween and Halloween itself.
Newcomer Sydney Saylor voices a pair of possums in "Topsy Turvy Tigger."
"Topsy Turvy Tigger" features the first and possibly only use of the song "Think, Think, Think a Little Harder." This features a new animation and was used when the Super Sleuths were very stumped and decided that they needed to do even more thinking.
"Nothin' Can Bounce Like a Tigger," a song used in one of the Playhouse Disney stage shows and also featured on the "Playhouse Disney Music Play Date" album is used for the first time in the TV series in "Rabbit's Song for a Pumpkin."
The events of "Easter Rabbit" directly contradict continuity according to the 2004 film Winnie the Pooh: Springtime with Roo. In that film, which was said to depict both Roo's first and second Easter, Rabbit was happily the Easter Bunny. In "Easter Rabbit," however, both Roo and Lumpy are present for Easter and claim to have discovered that Rabbit is the Easter Bunny, only for him to deny it and then try to take on the job.
There are seven candles on Porcupine's birthday cake in "Rabbit's Sound of Silence."
The program's opening theme has been altered and changed for every episode-- Chloe Moretz as Darby now performs the theme instead of Kay Hanley. Additionally, Darby pops in front of the show logo at the end and sings "Darby, Tigger and Pooh." A new song has been added, "The Question Song." "The Question Song" is now used on a rotating basis with "Think, Think, Think."