It bothers me not a whit that I have a ton of cookbooks that I haven't gotten around to cooking from. I love reading them, so yes, I'd say that I "use" all of them. The ones that aren't fun to read or to cook from, I give away. My favorite cookbook authors are Julie Sahni, Nikki and David Goldbeck (LOVE their American Wholefoods Cuisine), Maida Heatter, Diana Kennedy, Marion Cunningham, Madhur Jaffrey, Rick Rodgers, and all manner and forms of the Cook's Illustrated publications. I also frequently cook from Julie Jordan's Cabbagetown Cafe books and the Asian cookbooks published by WeiChuan.