The most hilarious? i dont know.. maybe Meet the Fockers? or The Pink Panther?
Titanic, one of the most expensive movie at the world! And the most dramatic film)
sure, the most sad cinema - "A walk to remember" (of couse, for me)
i can not choose the most positive) their is too many
and the last.. the most inspirational movie is The Oxford Murders). were you surprised?