I like to not listen to other people's reviews until after I make my own judgement.
Then I take everybody else's opinions and weigh them up, then I make my final judgement.
Example: I initially enjoyed Origins, then read every review I could before the DVD came out, made a second judgement taking all the reviews into account, then watched the DVD knowing all the opinions, and made my final judgement. I ended up giving it a 4/10 after that.
I do that with every CBM. (Except for certain films, like TDKR, Iron Man 3, Thor 2, Fantastic 4 (2005) and Spider-Man 3)