Watching pro players on Twitch is certainly what got me more interested in the pro scene and now I'm reading up on all the roster changes and drama like my life depends on it lmao.
I'd also suggest http://www.twitch.tv/lxthul , and Chig is good for a more chilled stream http://www.twitch.tv/chig
Don't forget my sweetheart and super nice dude Snip3down: http://www.twitch.tv/snip3down/profile
Wait, you have to pay to watch their stream now? Things have changed since I watched streams.