SMBC stands for Saturday Morning Breakfast Cereal, but it's really a webcomic of the format 'a joke a day', but with scientific themes. You'll typicially see these mundane situations, and suddenly one of the characters (there are almost no main/recurring characters) will whip out some obscure theory. I find it a lot more accessible than xkcd. I enjoy it a great deal. Anyone else?
Here's the link: http://www.smbc-comics.com/
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clarity of thought before rashness of action