I'm normally against filler art, but..
(Image from Ozy and Millie. I can't find a link to this image, so you might have to just click on the link for the site to see it.)
This one just spoke to me. I saw the sign Millie was holding and I started giggling for quite some time afterward. This was in character for the strip, it featured a joke that was funny and it appeals to me on a base level.
That's it. This comic is going into my top 5.