Did you know today was national cheesecake day? Of course you did. What you may not have known is that the Cheesecake Factory, in honor of its 30th anniversary, will be serving those signature outsized slices today for a mere $1.50—what they cost back in '78. Now, some of you may snicker, The Cheesecake Factory? But know that many a food critic have confessed to us that the Factory's eclectic California cuisine is their guilty pleasure. And what has more guilt than a whopping piece of cheesecake topped with peanut butter and cookie dough? $1.50, at your local Cheesecake Factory.