Cul De Sac is a strip I discovered last year. Its creator, Richard Thompson even has a blog. I love, love, love this comic strip. It's been described as the next Calvin and Hobbes, and I heartily agree. There are the nostalgic childhood moments mixed in with the blunt honesty of children.
Many times I find myself laughing out loud because I can appreciate the kids' behavior and remember when I felt that way myself. Case in point: