In the episode entitled "Star Check" , the episode were Dexter and his 2 friends go to a Star Check convention, they find shelves at a Barbie style convention. When they are walking to get soda/candy from the seller, about 1 minute there strolling and talking a bunch of stuff animals shows up in the background.Look carefully and you will see Blossum , Bubbles, and Buttercup dolls. You cant tell by what there wearing but you can see by their hair...pause might help.