Daniel Radcliffe tongue trick: Harry Potter star shows off his shape shifting tongue. By J J Anisiobi Updated: 07:41 GMT, 16 February 2012 After a bizarre interview on Spanish television Daniel Radcliffe is certain to get tongues wagging after his latest stunt. The Harry Potter star is used to having camera trickery help him complete scenes but there was no magic needed on Monday when he appeared on the Spanish TV show El Hormiguero. _lpl71z4Oyg1qdrfyno1_500.png (PNG Image, 500×538 pixels) Always... Mental_floss Blog & The Quick 10: 10 Things You Probably Didn't Know About Harry Potter - StumbleUpon. With Harry Potter and the Half Blood Prince coming out in the U.S. later this week, it's time to out myself as a Slytherin Supporter. Maybe you already knew that. Nothing against Gryffindors - I'm no Voldemort or anything - but I always tend to like the villains a little more than the do-gooders.