Leo (Tommy Chong) makes his first appearance.
Leo and Hyde's dialogue in the closing scene reprises Cheech & Chong's "Earache My Eye", from "Cheech & Chong's Wedding Album" (1974).
Eric sleeps on Spiderman sheets. Topher Grace, who plays Eric, would later go on to star as Eddie Brock Jr/Venom in the film "Spider-Man 3 (2007)".
When Kelso pulls up to the Foto Hut, Hyde starts to open the window with his left hand while holding photos in his right hand. In the next scene, he's using his right hand to open the window and the photos are in his left hand.