Of the ones listed, I'd have to say rock lee's opening of the gates. Anyone who learns it can do it. Imagine if a jounin like kakashi did it. With over a thousand techniques at his command, I most certainly like to see what could be done. Of the ones not listed, I'd say Naruto's uh...expulsion of red chakra. You might say it's not a technique and that he's just wasting chakra, but the fact that it wraps around him instead of just pouring it gives it a technikee feeling to me. Anyway, I'd like to see it against rock's gate opening.