Really ups the ante and the stakes on the Oedipus jokes - troublingly and bizarrely. It's a film with a very freaky vibe to it. This is only too appropriate for a film about when time travel goes wrong and effectively allegorises the worst excesses of the 80s (a la 'Poltergeist 2') but I found it mighty disturbing as a child and not in a fun, ghoulish way! Would make provocative pairing with 'Twin Peaks: The Return'.
A sequel that expands the universe with a more complex story and actually thinks about the consequences with time travel. It fits nicely with the original and continues directly where the original left off but loses half a point by the fact that it can't stand on it's own feet.