Sam's last name is Franklin.
This was Allan Melvin's final appearance as Sam. In the various reunions he was often referred to, but never seen.
When Sam is in Mike's office one camera angle shows the front wall (fourth wall) of Mike's office. This is the only time in the entire series that we see this wall and camera angle.
Obviously running out of fresh ideas, this retread of a misunderstood Alice/Sam wedding situation was done merely seven episodes before in "The Elopement."
In the scene where the three girls are talking to their mother about wedding gifts, Susan Olsen has a large spot of make up just below the left side of her mouth. A clear indication that little Cindy is getting older, the make up is hiding a large blemish.