* CareerResurrection: Alyssa Milano.
* HeyItsThatGuy: [[Series/{{JAG}} Terry Parsons]].
** What many ''Film/MortalKombat'' fans said upon seeing Linden Ashby in season six.
* HeyItsThatVoice: In the Japanese dub:
** [[Creator/TakehitoKoyasu Billy Campbell is]] [[Manga/MobileSuitGundamWing Zechs Merquise]], [[WeissKreuz Aya Fujimiya]] [[RunningGag and too many characters to list here]].
** [[Creator/ShowHayami Michael Mancini is]] [[Anime/SuperDimensionFortressMacross Max Jenius]] and [[Manga/{{Bleach}} Sousuke Aizen]].
* OldShame: It's revealed that Michael used to be an [[spoiler:exotic dancer]] to pay his way through medical school. It gets [[FromBadToWorse even worse]] [[NeverLiveItDown when Peter learns about it.]]
* RomanceOnTheSet: Several occasions, such as real-life married couple Josie Bissett (Jane) and Rob Estes (Kyle)[[note]]who, sadly, have since divorced[[/note]] ending up together in the finale, Grant Show (Jake) and Laura Leighton (Sydney) dating and she and Doug Savant (Matt) eventually marrying.
* WhatCouldHaveBeen: Hunter Tylo of ''TheBoldAndTheBeautiful'' was to play the original [[BitchInSheepsClothing Taylor McBride.]] However, she was fired due to becoming pregnant, which she had successfully sued the show's creator, Aaron Spelling and the show's producers for her dismissal.