I like MyAsianTv, Viki, dramanice, and occasionally dramacool.

If you are getting blocked at work, have you thought about using your phone or tablet? There are a few good apps out there. I watch on mobile exclusively. Hulu, Viki, Dramafever and Crunchyroll all have apps. There is also YouTube app and Dailymotion app. If you use Android, be sure to get a flash browser app lime Dolphin Browser so you can watch streaming sites like Dramacool or Gooddrama. (^_^)
Good Drama
My Asian TV
Kiss Asia
Drama Fever
Kissasian is fairly new I think. Just started using Drama Fever and Viki but can't stand the ads so I'm trying them out. I want good video quality and subs x) 
i always download the drama :3 
from :   https://www.freemoviesub.com/
              http://doramax264.com/
              http://www.dramacool.com
              http://myasiantv.se/
Dramafever and viki. 
For me the best site is KissAsian^^ 
dramanice is fantastic. 
Generally I watch dramas on Viki and sometimes on dramafever. 
Mostly for me is KissAsian, MyAsianTV, YouTube, DramaCool, GoodDrama.
I've watched on VIKI, too, but the servers got so busy that was so hard to watch it. DramaFever has commercials, which I try to avoid.
viki is where I go to first, then dramafever if viki fails :P

downloads from youtube+dailymotion
streaming through
dramago through kodi
dramafire
dramacool+others mentioned
viki+dramafever (not everything available)
I guess what we all want is a site with the same quality you get on dramafever, no ads, and evertything is available to everybody
I also see some sites I never heard of
here;s another one
http://azdrama.info/
The thing is they have a downlad or stream option.
Think I'll start a new post on this.