Sadly this is me, I hate it, but I know it is true, my mind works far faster than my mouth and when I am excited it comes out as half sentences, joined by "likes" and "you knows". I have to concentrate to focus on pulling myself back and then I worry that I am not getting my thoughts across, but at least I know I am not getting them across when, I am doing it at thought speed.
Someone said to me once "Dude you use likes like other people use ums". If there was one thing I could change about my speaking style that would be it. Funny part is I speak at conferences and when I monolog it is not an issue. Q&A is a different story all together.