I can't make muffins without thinking of this 30 Rock classic.
And I did make muffins this morning-- Kemp's "You-Won't-Believe-They're-Whole-Wheat" Blueberry Muffins from Gourmet.
I made some substitutions based on what I had on hand, like regular whole-wheat flour instead of whole-wheat pastry flour, and lemon juice instead of lemon zest. (Also, I poured in a whole bag of Trader Joe's Frozen Blueberries, because I figured, why not add some more antioxidants?)
They are delicious, and they really do stain your tongue purple, just like the recipe promises.