It appears as if the movie and show achievements are mixed up. I unlocked "Boob-Tuber" after watching a movie, and "Let's all go to the movies" after watching a show.
For the movie, you can keep skipping the track forward instead of watching the entire thing and it will still count as being watched. However, you can't skip the ads, so you will have to watch the same ads a few times over even if you're skipping through.
For the show, there are a bunch of shows that are less than 10 minutes. I just chose an episode of Comedians in Cars Getting Coffee, as there's a challenge currently for watching every episode of it.