Starbucks has managed to perform the tidy feat of framing their desserts as a necessity, a maintenance item, something you pick up every afternoon to get you through the day. I would guess that most people would balk at saying something like, "Let's stop by Baskin Robbins to buy an enormous hot fudge sundae before we go to the shopping mall." But "Let's stop at Starbucks" is a perfectly reasonable thing to say in that situation.
The irrational number pi is the ratio of a circle's circumference to its diameter, and it starts off - as you no doubt know - with 3.14. Thus its celebration (according to American notation) on March 14, 3/14. Today also happens to be Albert Einstein's birthday, which makes the day even more mathematically festive.
One of the interesting things about going gluten free is that you end up eating a lot of Passover food, even if - like me - you're not Jewish.