I've only really started reading d-blogs recently, so I don't have an amazing list, like many others. Also, I don't know a lot of people in the DOC, so that also kinda puts me at a disadvantage.
However, these are the dblogs that I keep up with:
Bitter-Sweet @ http://www.bittersweetdiabetes.com/ (This one should be obvious!)
Diaturgy @ http://diaturgy.blogspot.com/
Sugar Rollercoaster @ http://sugarrollercoaster.blogspot.com/
The Angry Type 2 Diabetic @ http://theangrytype2diabetic.blogspot.com/
Ninjabetic: The B.A.D. Blog @ http://www.ninjabetic.com/
Sugar's the Bitch, Not Me @ http://sugarsthebnotme.blogspot.com/
Six Until Me @ http://www.sixuntilme.com/
DSMA @ http://www.diabetessocmed.com/
Texting My Pancreas @ http://www.textingmypancreas.com/
Not My Cell @ http://notmycell.blogspot.com/
Diabetesaliciousness™ @ http://diabetesaliciousness.blogspot.com/
Type 1 Diabetes Memes @ http://type1diabetesmemes.tumblr.com/
And anything else that shows up in my twitter feed! I hope to expand my list!