Starring Michael J Fox, Christopher Lloyd and a genuinely beautiful school building, Robert Zemeckis’s time travel comedy blockbuster continues to be a cultural touchstone. At the time, it dazzled at the box office and with critics alike. But 40 years on, how does it fare with Mick, Hannah and Jen? Do the inevitable time travel plotholes matter? How much did the young Jen fancy the young Fox? Does Mick own this 1980s smash on DVD? And, perhaps most importantly, what in the Doc Brown is going on with Hannah’s hair? 

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