The opening shot after one of the ad breaks of a snow covered street with arch and white picket fence in the foreground is actually from the film Groundhog Day (1993). The original shot is of the street in front of the bed and breakfast after Bill Murray's character wakes up the day after his repeating ordeal.
Audrey Wasilewski, who plays Madeline McLean, also played Cindy Bradley / Yvette LaJimodiere in Wonderfalls (2004) another Bryan Fuller show. She appeared in the episode Crime Dog.
Bobo is supposed to be a Bonobo which is not a monkey, but a chimpanzee. The animal they used for this show was a monkey, a Capuchin with a tail and an avg. weight of 6 - 8 lbs. Bonobos, being chimps have no tails and are much bigger. Even females are over 60 lbs.
The character who lives in the previously mentioned Stephens' house from Bewitched is named Abner. Abner was the name of neighbor of the Stephens' in Bewitched.