I've been watching The Mentalist off and on for the past few seasons. I want to say that I probably saw most of season 3, all of season 4, and have definitely seen all of the current (5th) season. The most recent episode, S05E05 - Red Dawn, left me with some questions: Who was the FBI woman in the limo who called the CBI director at the end of the episode? Also, who was the man in the limo with her that directed her to call the CBI? I'm sure I'd know the answer to both of these questions if I'd seen every episode, since the whole episode was a prequel to the series.