On March 3 only, from 7am to 10pm local time, at participating IHOP locations, get a stack of buttermilk pancakes for free as part of its National Pancake Day Event. Plus, make a $5 donation to Children's Miracle Network Hospital on the day and receive a $5 IHOP voucher. That's the best freebie offer we've seen from IHOP since October, when we saw a scary face pancake for free.