For his post, Grint used a still from their most memorable scene together in Harry Potter and the Goblet of Fire, in which McGonagall teaches Gryffindor students how to dance by forcing Ron to reluctantly partner with her during a demonstration. (It's a tough job, but someone had to prepare those nerds for the Yule Ball.)

Dame Maggie Smith has been honoured in heart-wrenching tributes from Harry Potter co-stars Emma Watson and Rupert Grint. It was announced on Friday that Dame Maggie passed away in hospital at the age of 89. Tributes from friends and fans have been flooding in since.

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