This sounds like fun. Buy or rent a movie that you wouldn’t normally be interested in watching. Watch and then write a review. From the originator of the idea at Cinexcellence:

This doesn’t mean that it has to be one that you would probably hate. It could be one of those DVDs that you walk by all the time but never took a chance on it. But it could be one that you hate. . . . hey, we might discover some hidden gems along the way.

I think I’ll try this out. Something rated PG or G that nevertheless sounds stupid.