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Father son relationships and the death of a parent are both ripe themes for movies, but the films based on these themes often turn into very so-so or melodramatic affairs. I think what distinguishes the good ones from the bad ones is, mainly, well developed characters and relationships that ring true.
A trailer is not enough to say whether And When Did You Last See Your Father? will have those things, but this one certainly seems to indicate it will. At the very least the acting should be superb.