Harry Potter And The Half-Blood Prince looks set to be the best Potter movie yet. Director David Yates did a damned fine job of turning the previous book – possibly the dullest in the series – into a decent movie, so you can only hope that with the much better source material offered by book six (what a climax we’ve got to look forward to!) he's managed to create something really exceptional. If the clips here are anything to go by, he’s sticking to his "impressionistic" vision of the Potterverse but there's also evidence of a lot more humour this time round. Sure the Potter movies aren’t everybody's cup of tea, but this one may just make a few more converts.