Earthsong is perhaps my favourite webcomic.  Its highly imaginative storyline combines with expressive, interesting and vibrant artwork in a unique manga-inspired style to give something that is an excellent read.  The author, Lady Yates is one of the more social i have come across, and the forum's a great place to hang out.  Be sure to give this comic a visit, or buy a copy now that it's published.

Inverloch is one of the few high-quality complete comics available on the web.  Definitely worth reading.  It will take you some time.

The Pheonix Requiem is Sarah's next project.  In its very early stages at present, and highly mysterious.  Also worth reading.

Goblins is outstanding.  The artwork and colouring are simple, and occasionally leave a little to be desired, and the comic is almost invariably late these days, but that does nothing to detract from the storyline.  Thunt is an outstanding storyteller and a master of the little details.  Occasionally fairly gory.

WARNING: Contains some explicit content.

Twelve Dragons is fantastic.  An unusual, simple but highly expressive inked art style with occasional splashes of colour gives it visual appeal, while the storyline, already many chapters in and really only just beginning is well thought out and interesting.  Please go and read this vastly under-appreciated comic.

WARNING: Contains some explicit content.

Flipside is really only just beginning.  There's an enormous back catalogue of old work, with a lot of interesting stories and great character development in Book 0, but the main part of the story, Book 1, is just getting into full swing.  Art-wise it's fairly traditional manga, greyscale, with some beautifully coloured pages and panels done in collaboration with another artist, and cute little chibi inter-chapter interludes.  Well worth reading, particularly Book 0.

The banner says it all really.  An oustanding steampunk world from two old masters of print comics.  The Foglios' work is outstanding, highly imaginative and amusing.  The archive is VAST, but well worth perservering on.

No banner for Buck, however.  An old print comic being re-inked and coloured for the web, Buck Godot is filled with Sci Fi staples and engaging stories.  Like Girl Genius, well worth reading.

Darths and Droids

David Morgan-Mar's Irregular Webcomic is great.  Intellectually challenging in places, consistently funny and always on time.  The archive is the biggest I've ever actually slogged through.  But it's worth doing.  Parodies reign supreme here.  Watch out for Cthulhu.

Darths and Droids is by DMM and some friends from work.  One of the best Star Wars parodies I've seen.  They even manage to make JAR-JAR likeable.  It's uncanny.