Already reviewed on the Fight.
Excellent and renowned webcomic, this thing is just beautiful. Comes out infrequently.
The Order of the Stick
A comic about a rpg-style campaign in a huge fantasy world populated by stick figures. I never know what's going on but some of it's damn funny.
Gunnerkrigg Court - By Tom siddell
An atmospheric and moody comic set in a strange school. Like Harry Potter but fucked up cool.
Dicebox: Illustrated Feed
Nice art, another incomprehensible story.