I recently got one of the Google Owly cartoon themes on Igoogle. It reminded me of what an awesome comic it is. It's done by Andy Runton, and is done with no words. The only way Owly communicates with his little friends is through little pictures in the word balloons. It works brilliantly. And, while I suppose they are aimed at children, they have a certain zen quality that will appeal to adults.
You can read some of them here. Click on the ones that say "Read It". We bought a couple a few years ago, and I'll probably get some more soon.