I only like a couple of the hardcopy published titles, but I have tons of favorite webcomics.

Published Comics

Runaways
BPRD
Hellboy
The Amory Wars

Webcomics

Lackadaisy Cats
Octopus Pie
Digger
The Zombie Hunters
Demonology 101
Gunnerkrigg Court
Templar, AZ
A Softer World
Elsie Hooper
Bang Barstal
Ballad
Elf Only Inn

And dear god, so many others. xD