I have not been keeping up with these as well as Rob has but I'm gonna start my list.
Occasional Superheroine - Comics blog from Valerie D'Orazio. She's all kinds of awesome!
Monster Cutie - My illustration tutorial blog that I really need to update more regularly.
Super Art Fight - Live art battle performances. I'm one of the regular rotating art fighters.
Johnny Wander - Bio comic from my friends Yuko Ota (artist) and Ananth Panagaria (writer). Must read!