Deep Throat, Season 1, Episode 2 -

This scene is the first ‘ditch’ scene. 

After being stopped and frisked by some mysterious figures while on the road, Scully is pretty fed up with the case and wants to leave for D.C. They have a discussion about the validity of the case in the hotel room, and thinking that she’s outsmarted him, Scully is relieved to hear Mulder say he’ll go back to D.C. after he’s packed and had a shower. 

Instead, however, he gets in the car and leaves her stranded at the hotel. 

I’ve got mixed feelings about Mulder’s ditches of Scully. This one, I think, was surely done out of spite. He wanted to keep investigating and was clearly irritated by Scully’s reluctance to believe - she even saw the lights!!! (In other instances, I think he did it out of a need to shield her from whatever situation he was sure to find himself in.)

This is one of my favorite scenes from: Deep Throat

Favorite Scenes - at least one from each episode - #3 of ???