He is a high Master Zerg player who plays on the EU and NA server and does ladder, tournament and viewer games. He also does something called "The Morning Coffee Break", where he takes Bronze-Plat level replays sent in by viewers and analyses them, then gives them tips and advice.
He commentates his games pretty well and manages to give the viewer advice, while also being fairly hilarious. There's also a lot of viewer interaction which is always awesome. He is generally just an awesome guy, with an awesome stream and I think he deserves a lot more recognition from the community.
His website can be found here: dksc2.weebly.com
His stream here: http://www.twitch.tv/professionaladvisory
And Incontrol's original post here: http://www.teamliquid.net/blogs/viewblog.php?topic_id=341623