There's not a lot that I know, but "Because Czech is cool" has good content but not a lot of basics for those beginning from zero and their channel is not so active. Czechclass101 is alright for some of their basic videos like greetings, learning numbers, etc but I don't really use it much. Ecolinguist is a Polish guy learning Czech with a native Czech. They're not really teaching videos per se, but you get to learn along with him. TadyGavin has a lot of good resources and tips for starting out though he's not a native speaker.

If anyone else knows any more good youtube channels for learning Czech, I'd be interested in them too.