Five webcomics to read while xkcd is on hiatus

Due to a family illness, Randall Munroe announced that we won't be seeing regular installments of his popular webcomic xkcd. We wish Munroe and his family the best, but in the meantime, what's a math-loving webcomic reader to do? » 11/20/10 9:00am 11/20/10 9:00am