Ever since Kathleen introduced me to this comic at Hyperbole and a Half by Allie Brosh, I've been thinking about doing some comics of my own. Maybe I will someday soon. In the meantime, I've been scrounging around the Net for other webcomics, and recently found Hark, A Vagrant! by Kate Beaton. I especially like the historical/literary ones.
A few more so-far favorites...
The Great Gatsby,
WARNING: Some swearing sometimes.