Which movie has the highest average rating? | The title of the movie that has the highest average rating is Snow White | What is it's rating?
SELECT avg ( T1.stars )  FROM Rating AS T1 JOIN Movie AS T2 ON T1.mID   =   T2.mID GROUP BY T1.mID ORDER BY avg ( T1.stars )  DESC LIMIT 1
highest average rating refers to MAX(AVG(rating)); movie title with the highest average rating is specified; the rating refers to AVG(stars);