Billing Displacement: Richard Sanders is featured in the opening credits and poster, but only has one scene as a Driver's Ed instructor. His character doesn't even get a name!
Covers Always Lie: The Valley Girl standing with Nicolas Cage's Randy in the movie poster is not actually Deborah Foreman's Julie. Word of God says that it is actress Tina Theberge, who plays Randy's ex-girlfriend, Samantha, in the movie. A budget DVD release of Valley Girl with The Sure Thing (as the Totally Awesome 80s Double Feature: The Sure Thing / Valley Girl) has Foreman's head obviously Photoshopped onto Theberge's body on the front cover.
Sleeper Hit: Filmed on a shoestring, the movie was a surprise success, earning $17.5 million off a budget of $350,000.
The whole "valley girl" archetype is rooted in the 1980s.
The film's aesthetic drips period-specific 1980s culture, particularly the hair, clothes and music.
At Suzi's party, the Valley kids are enjoying the sushi platters as Randy and Fred look on, visibly nauseated. Sushi was very trendy in the Valley in the 80s, but apparently unheard of in Hollywood at the time. Nowadays, sushi is quite common across the country, including in Hollywood.
Dawson Casting: Played straight with Jessica Rothe who was 30 when playing high school senior Julie
Oddly enough, reversed with Alicia Silverstone who plays adult Julie. Silverstone wasn't even 17 years old until 1993 but here she's playing a woman who was a high school teenager in the early '80s.
Deleted Scene: The soundtrack features a mashup of Toni Basil's "Hey Mickey" and Blondie's "Call Me" performed by Peyton List but the mashup doesn't appear in the film. Only a few seconds of "Hey Mickey" appear, as performed by a group of cheerleaders, but the full Peyton List version was cut.