Edge of Tomorrow. William Cage has picked up the invading aliens' ability to Ground Hog Day Loop every time they die. He makes contact with Rita Vrataski, who once had the same thing happen to her. Rita trains Cage (a rear-echelon PR officer who's never been combat-trained) using some training robots with No OSHA Compliance. Worse, whenever he's too injured to go into combat, she shoots him in the head to restart the time-loop. Cue Failure Montage of various Amusing Injuries and subsequent Boom, Headshot. One time Cage has had enough and suggests he just transfer the power back to her.
Rita: I've tried everything. It doesn't work.
Cage: Have you tried...you know...all the options?
Rita: Oh you mean sex? Yeah, tried it.
Cage: How many times?
Rita: All right. (pushes button — robot slams Cage across the room)