Have you ever noticed that movie posters\ads usually have flattering quotes on them declaring what amazing movies they are? You know, like "A Triumph!", "A Masterpiece!", or "This is a ... movie". Of course you have, you're very observant. Well, many of these movies do not deserve these accolades, and some of them surely struggle to get anyone to say anything nice about them whatsoever. This is where you can step in. Watch the movie*, come up with something nice to say about it like "I can't wait to see this again" or "It did not make me fall asleep", and call whoever is in charge of collecting these quotes. This is where you're going to have to do a little research because I don't know who you're going to need to contact. But you could stand to show a little more initiative. When they ask who you are and why they should use your quote for their movie, tell them either you represent the voice to the movie-going public, or that you work for a newspaper such as the Harristown Post-Review. They may not check up on you. If they fall for this, have them pay you. It really doesn't matter how much they pay you since you didn't do much work anyway. You're welcome.
* You do not actually have to watch the movie. Presumably, many of the people who actually provide quotes for these movies do not.