In my first attempt it was allot of filler words. My favorite filler word seems to be "Ok." When editing this video I tried to cut out most of the filler words, but this ended up with a lot of dead air only showing game play and not my interaction with it.
The second attempt was a complete bust. After loosing all the audio the shoot was un-salvageable. If memory serves correctly, the word "OK" was used far to often and the amount of dead air was pretty bad.
The next video went about the same as the first and second. I tried editing out all the filler words; that left out allot of the commentary and left dead air while I was going through parts of the game that were challenging me.
My most recent attempt went a better. I studied some of my favorite YouTubers that post let's plays. The ones that I like the most and the ones that seem to be enjoyed by the most people edit out a ton of dead air. If you watch GassyMexican's videos and compare them to SeaNanner's videos, you'll notice that it's allot easier to watch the SeaNanners videos because he really only includes the funny moments in his videos. Taking this knowledge, I edited out anything that didn't include me commentating, or wasn't funny.
This process of creating these videos has been immensely enjoyable as well as a ton of work. Never let anyone tell you that what people like PewDiePie and CaptainSparklez have no talent or are lazy. This is a really job.