Alright, well I follow quite a few of the above, but some of my favorites that haven't been listed are:
The Meek - Gorgeous art. Be warned, the first chapter is a little NSFW because of nudity, but it's not risque (she's a girl who lives in the jungle and doesn't have any clothes).
Phoenix Requiem, Dreamless, and Inverloch- All three done by the amazing Sarah Ellerton, gorgeous art again, and all three of them are complete!
Flaky Pastry- Off the wall, hilarious humor anyone? This one's notable for its EPIC FORESHADOWING!!
Hanna Is Not A Boys Name- Really? No one's said HINABN yet? The updates are a little sporadic but the comic more than makes up for it.
The Dreamland Chronicles- I don't follow this one religiously, but every now and then I go read through what I've missed. It's a 3D rendered comic which is interesting, kind of like if Pixar ever made a comic.
Earthsong - Basic fantasy, fairly good.
Fey Winds - Snarky fantasy. Definitly worth checking out.
Dan and Mab's Furry Adventures(DMFA) - This one's a bit of a guilty pleasure. Yes, it's a furry comic. Deal. It was my first webcomic ever, but it's one that's kind of hard to get into. Basically, the beginning is not that great. I might even call it terrible. But there's such an artist improvement, it totally makes up for it. If you can get through the first part, it's amazing. The first webcomic I check everyday.
Wow. I read waaaaaayyy too many webcomics. And this isn't even all of them. I'm also keeping up with XKCD, Looking for Group, VG Cat's Super Effective and others that have named here already.