Re: Kukazu falling for a basic kage bunshin trick. I dunno if anything Naruto does with his bunshin is a common trick since his tactics are all based on the fact that he's got bijuu levels of chakra in addition to being a Jinchuuriki and can use that move in ways that are just ridiculous. Hell, Naruto didn't even need to be in either group that attacked since there's no reason his clones couldn't use the Raseenshuriken in his stead (tus removing the danger to himself.
Actually, that's also part of why his tactics are so effective: while he's really good at clever tricks, Naruto is just as likely to eschew basic tactics for shounen reasons.
Of course, Kukazu is lucky that Kakashi aimed for a reliable torso stab rather than a Chidori head stab.