Corrected entry: In this episode, Steve asks Brandon if he'd ever heard Clare sing before (as she's pretty bad) and he says no. In Divas (when she showed up at his house when his parents were away and handcuffed herself to his bed) she sang while dancing for him - and actually had a pretty good voice.
Unnecessary Roughness - S7-E16
Corrected entry: At the Peach Pit After Dark, David and Tom are preparing for Super Bowl weekend. But the Super Bowl is played at the end of winter, and the gang is all about two weeks away from graduation, which occurs at the end of spring.
Correction: The graduation doesn't take place till episode 31, which aired in May. While preparations may have been made for graduations, they certainly were never 2 weeks away from graduation and no mistakes were made.
Corrected entry: When Kelly and Valerie are discussing what happened outside Brandon's house two years ago, there are two flash-backs. In the first flash-back Valerie has her arms down along her body when she says "hello" to Kelly, but in the second flash-back her arms are crossed when she says "hello".
Correction: The flashbacks are told from both characters' points of view, and they each remember the event differently. That's why stance, tones of voice, and the conversation differ in each flashback.
Correction: I always assumed that Brandon just didn't want to relive that whole 'seduction scene'. He omitted the truth, this isn't a TV mistake.