Mr. Poole says "in my day we had good music" and Harvey replies "didn't you grow up in the '70s?" In real life Paul Feig was writing Freaks and Geeks during his time on Sabrina. Freaks and Geeks was based on his experience growing up in the '70s and featured great '70s music.
Sabrina wears two of her opening credits outfits in the actual episode. The Breakfast at Tiffany's look when she comes back from Paris and the Clueless look (which was the last credits look from episode 1x02) when she arrives at the pleasure dome.
Opening Costume Change: Sabrina wears army camouflage. She says, "It's camouflage, I am over here."