The very first one, featuring a movie I saw many years ago, had me laughing out loud.  Remarkably, this is pretty much the plot of the film!

http://www.huffingtonpost.com/2010/02/02/the-worst-movie-taglines_n_446510.html

By the way, some of the ones they chose didn't feel particularly horrid...Die Harder?  That isn't quite as bad as the first feature, right?!