When the team mistakenly thinks it is Parker's birthday, Knight gives him a red Swingline stapler. Gary Cole was in Office Space (1999), he played the office manager and is famous for his line "if you could do that for me...that'd be great". In one scene he takes Milton's red Swingline stapler. After the movie was released, people wanted a red Swingline stapler, so the company started producing one.
This is the 450th episode of the series.
Actor Francis X. McCarthy plays the father of actor Gary Cole. In reality McCarthy is only 14 years older than Cole.
The retirement home "Sunshine Pines" may well be the writers' homage to The Golden Girls, in which Sophia (Estelle Getty) is initially sent by her daughter Dorothy to "Shady Pines". If so, it's a very playful Easter Egg.