www.rottentomatoes.com is my favourite movie review website, and like most things on the Internet, uses the wisdom of a large number of people, to give overall ratings to movies. At the moment, the top ratings are going to the film about the Facebook founder, Mark Zuckerberg, which is receiving the 97% rating from all critics, but Rotten Tomatoes then breaks this down to top critics and the general audience. 

For example, with some of the more commercial ho-hum mainstream movies, the top critics may give the movie a rating of say 40%, but the general public might give it a high rating of 60%, so it allows you to know while you are not going to a critically acclaimed movie, it may appeal to you on a day when you don’t exactly want mental stimulation! Typically, audience ratings are higher than those of critics. I found the site useful and I generally have a look at it, before deciding whether to go to a movie or not.