He considers "L is for Love" as one of his favorite episodes he's written. He was super happy about a bunch of episodes in Season 3. His most favorite line ever was "One time, I told her we were out of bread, but then she found a loaf and beat me with it." from "Cheater by the Dozen".
A caricature of Kevin Sullivan makes appearances in some episodes:
His caricature appears in "Pipe Dreams" as one of the people that help Lynn Sr. and Rita build their secret bathroom.
His caricature appears in "Really Loud Music" as one of the parachutists skydancing to "Best Thing Ever."