This is the first episode with Merrin Dungey as Kelly Palmer. Kelly (Deacons wife) was only mentioned in episode #1.1 (Carrie talks to her on the phone) and in episode #1.2 (Deacon talks about her to Doug.)
At the wedding the bandleader is played by Peter Tork, who is better known as a member of the band The Monkees.
In this episode, Kelly and Carrie mention they went to high school with Todd but it was never mentioned that they went to high school together or mentioned again.
During the part where Arthur tells Carrie they need to borrow a pair of her panties he says "Doug and I..." This is one of the few times (if only time) that Arthur doesn't refer to him by his full name "Douglas"