When accessing Bender's system files, a folder is labelled "Penguin personality" in reference to his time in penguin mode in this episode; penguins later attend his funeral.
Free Waterfall Jr is an environmentalist in "The Problem with Popplers". Free Waterfall Sr is a new environmentalist (also voiced by Phil Hendrie) introduced in this episode.
When Bender crashes and lands on his head, he is engulfed by electrical plasma, whistles, moans, and falls over like R2-D2 did in the Star Wars series.