When Leo wakes up from his “vegetative” state.
Leo Johnson is a bad motherfucker and there are some disturbing scenes where he beats up Shelly in the series. He is in a vegetative state for a long time in season 2 and Shelly and Bobby takes care of him but also makes fun of him and show their relationship in front of him, etc… I remember there was a lot of tension in the scenes with him and I always was waiting for him to “wake up” so it was a huge climax when he finally did!