Upon showing Sheldon his dorm room, President Hagemeyer mentions the room belonged to an Indian exchange student who developed a taste for barbecue. This is a reference to Raj who constantly rebelled against his Indian dietary culture on The Big Bang Theory (2007).
Director Melissa Joan Hart and Taylor Spreitler [Sam] worked together on the series Melissa & Joey (2010) where they played Aunt and niece.
Over time the series used several building fronts from the Western Street section of the Warner Ranch backlot. The front to Sheldon's dorm, Hudson Hall, was a well used facade for many decades. It can be seen in such films as The Music Man (1962) (River Citys library), and the police station in Rebel Without a Cause (1955).
Director Melissa Joan Hart and executive producer Nick Bakay previously starred together on Sabrina the Teenage Witch (1996) as Sabrina Spellman and Salem Saberhagen, they are also producers on that series.