Just for the record, Bob Anderson and the later Peter Diamond have been known for using flashy fighting. In fact, Anderson had choregraphed the fights for the first Highlander film and it featured twirling swords in it. By both Christopher Lambert and Clancy Brown. Even Sean Connery and Anderson as Connery's double did a flashy set of swinging in one fight. Anderson would later do this in the series during the first two seasons. Diamond and Anderson, along with Lucas wanted fights that really moved in the OT. But Guiness's age and the weight of the suit prevented that. As well as the limits of the equipment used to make a Lightsaber blade. But I digress. Cinematic sword fighting is by definition different from real sword fighting or fencing. As such today's audiences want to be dazzled by the combat. Films such as the Conan series, the Highlander franchise, The Princess Bride, Kill Bill, Big Trouble In Little China, the Blade trilogy and Crouching Tiger, Hidden Dragon have taken sword fighting to a whole new level. Lucas was adamant that the Jedi and Sith could really fight well. How well, he hadn't said. But better than the OT. When he hired Gillard, he was not only able to work within the confines of what he wanted, but he brought a flashy style to the duels. Elements of which owe to modern cinema and others to Asian weapons training. Which sometimes includes flashy displays of skill with swords and other edged weapons. The sequence with the Lightsaber blades in ROTS, does serve a purpose. The two were striking each others blades, but then they both went into overdrive there for a moment. Both Anakin and Obi-wan were winding up for a strike, which would lead into a Force shove. A massive one. It's a moment that's meant to show how alike they are. Both men have trained together for thirteen years. They know each other inside and out. They know each other's moves. Finally, they connect and it's Force shove time. Twirling swords is common in cinematic films. Arnold did it in the Conan films and Red Sonja. Lambert, Brown, Connery, Adrian Paul and Mario Van Peebles did it with Highlander.