Bruno Heller deciding on how the reveal scene will play out after nurturing it in his head for 5 and a half years:

"Jane turns around, and there stands Red John, arms wrapped, smirking"

Me deciding on how the reveal scene would play out after thinking about it for 5 minutes:

- Jane hears clapping behind him, and turns to see a figure standing in shadows. The figure starts talking in RJ's voice, walking slowly towards Jane, gradually phasing his high pitched voice out towards his normal one. As the last part of the shadows is on his face he says "The game's over..." face revealed in a mid sentence slight pause, now talking in his normal voice "....and I won."