Webcomic Highlight: Dresden Codak

Dresden Codak does not work like other comics, or even other webcomics. It's in it's own little universe filled with theoretical science, high minded philosophy, and silly slapstick humor. In a big way, it's impossible to summarize, since before the current storyline, there was no emphasis on storylines, only concepts. So this Highlight is a quick hit because I don't know if I can do it justice. The writing is charming and intelligent, the art is attractive and expressive, the science is fun, and you really feel like you have a budding writer evolving as you read.
Another good reason to go read it now is the fact that the archives are short. It's been around for a while, but Codak himself is a student, and so there are often delays between comics; sometimes updates are a month apart. So keep it bookmarked, and check it every so often. It's a reading experience you won't regret.

http://dresdencodak.com/

Webcomic Highlight: Gunnerkrigg Court

Here's a quickie for you: Gunnerkrigg Court is a comic that is fantastic. It's got a sort of Harry Potter vibe, with a young kid growing up at a fantastic boarding school, but there are few spots where the comparison becomes unfair. Mostly, it's unfair to Harry Potter, because Gunnerkrigg blows HP away.
It's about Antimony Carver, who goes to live at the school/community Gunnerkrigg Court, which is a haven for super-science, yet surrounded by a magical forest (with some noteworthy supernatural elements in the Court as well). Also, they employ a dragonslayer as their gym teacher, and have a class for kids with psychic powers.
Now for some of the cool stuff; there's an epic story arc, but Antimony (and the reader) doesn't know what it is yet, so we only get glimpses of it. For the most part it's a sweet story about the kids that go to school in the Court.
Also, the art is quite nice and dreamy, giving this already surreal comic an even more ethereal aesthetic. It took me only two sittings to finish it, so you won't lose much time if you hate it. Which is highly unlikely.

Webcomic Highlight: Darken

Geek culture is not one culture, per se, but rather an affiliation of subcultures. As with any subculture, the internet has become a haven for these groups to show their appreciation, and many do so in the form of webcomics. While I feel a post on webcomics in general may be forthcoming, but with this highlight, I felt the comment about culture was apt as Darken is essentially based in Dungeons and Dragons.
Written and drawn by Kate Ashwin, Darken is in interesting study in anti-heroism and anti-villainy, as the entire main cast is more concerned with their scheming than they are about morality and loyalty. To call it character driven would downplay the well-placed (and paced) action, but the interactions between the characters and their ultimate goals are what drive the reader.
The art is smooth and expressive, with some slight Japanese influence, and the coloring, when used, contributes to the mood and energy of the scene. Very rarely is it possible to confuse characters, though there are clearly some "basic" faces at use.
You don't have to know D&D, but it certainly speeds things up for new readers. Regardless, Darken uses a mixture of action, humor, strong characters, and good plotting to make a very worthwhile read.