Tonight's episode of Legacies paid tribute to The Vampire Diaries in a unique way by having the students at the Salvatore School put on a musical telling the story of the school's founding. With Legacies literally being the legacy of the story begun in The Vampire Diaries and carried through The Originals, the musical in "Salvatore: The Musical!" brought quite a few iconic moments and characters from The Vampire Diaries to life even if just as a story on a stage. But there was one moment in the episode that gave fans of The CW series an eagerly-awaited crossover of sorts -- and fans are freaking out about it on social media.