Paszabiceps for CS, and Izakooo. I don't care that I understand nothing they are saying, just good quality CS. Pasza hardly streams though. Aside from that just whatever tournament happens to be live, always something on somewhere.
Oh, also there is a 24/7 vod channel with 6000 vods between 2002-2012 for Broodwar. Probably the best channel on Twitch although most of it is in Korean.