Groove Mix

So I'm driving to work today, and Pandora just wasn't cutting it. I flipped on my 'Groove Mix' on Youtube for the next hour. These three are my favorite but I'm looking to expand the playlist. Anyone have suggestions? I like original stuff or really good cover songs. Maybe just give them a listen while you browse; some of the best parts are more toward the middle of the videos. Also, if you've heard these before, that's my bad. I just figured someone else hasn't.