Not sure how vague or how detailed you want, but here are some ideas that I've had:
-Older man librarian confronts bitchy girls making noise/talking on phones in the middle of the library. Librarian hits them with whatever the hypnotic MacGuffin is, and then we see them put to work, pushing carts full of books, re-shelving books, while tranced out and nude.
-A couple in a car duing a long road trip. The driver hypnotizes the passenger while talking to them, then pulls over and fucks them. Cut to the passenger waking up confused and flustered, thinking that they just fell asleep and had a werid sex dream next to the driver. The driver is quiet and looking smug.
-No real sequence, but a scene of an otherwise normal looking office, where all the employees are zombie-d out and wearing mind control headsets, dicks and pussies out.
-UFO Hunter lady is setting up her camp out in the wilderness. A creepy looking spy/MiB type sneaks up on her and activates her MK Ultra trigger phrase. Possibly this can come with a brief flashback to her initial brainwashing at some facility. The Agent fucks her, then does a quick job of cleaning her up and re-doing her clothes, its implied that this is just how he amuses himself in his off-hours. Time passes and the UFO Hunter comes back to her senses in her still-unfinished camp. She realizes that she's experiencing "lost time," and gets really happy and excited because lost time is a common feature of alien abductees.