Dining at home
Not just cooking but dining at home as entertainment. Mostly due to the economy and people still wanting to eat well and have fun with friends.
Big Cookbooks (and food related books) by Bloggers
Books by bloggers have already been done but a big crop is coming out by Chez Pim, David Lebovitz (an author before being a blogger), and Organette and I think they will be very popular.