Now I often like to check the rating of a movie or show after I've seen it and rated it myself. And I'll say, rotten tomato is the worst, IMDB is generally ok. But Metacritic ratings are almost always fairer (so long as theres atleast 10-15 ratings being taken into account).

Also rogerebert.com has amazing reviews of movies even now with all their new writers not just archival ebert reviews.