One guys "crap" is another guys entertainment.
I use IMDB to check the ratings of a movie I want to see (in my defense, I am old) and if a movie has a 6.5+ rate I consider it worth of my money and time. But more than that, I always check the ratings distribution and the ratings in my demographics, they are much better than just an average.
To give an example, Twilight has a rating 5.2, but almost 30% of the ratings are either 1 or 10, so I know this is a "love-it-or-hate-it" movie. In my demographics, the average is 4.9, while for "Females under 18" it is 6.6, so I know this movie is not for me.
Terminator 2: Judgement Day, on the other side, has the ratings describing a normal curve peaking on 9, and an average of 8.7 in my demographics (the highest of all), so this movie is right for me.
"Love may fail, but courtesy will previal." -- A Kurt Vonnegut fan