Cook's Illustrated: A great magazine, and they do great cookbooks, which I
use more than any others. Two caveats: they sometimes don't proofread as
carefully as they might (for instance, the pizza dough recipe which tells
you to cook up a potato and mash it and then never tells you when to add it
to the dough), and their bread recipes are way too specific about how much
flour to use - it totally depends on what kind of flour you're using, how
humid it is, and a host of other things - and if you're not a very
experienced baker, your dough is frequently going to end up too sticky. But
overall, these are the best cookbooks I have.
These really are the best recipes: tested and retested, I've never
made anything from this cookbook that wasn't pretty darn good. From
outstanding chicken pot pie to great sandwich bread (keeping in mind
the above caveat: add more flour if the dough is very sticky), this
might be my favorite cookbook.
The staff of Cook's turns their attention to recipes that can be
made in less than 60 minutes (though it's debatable whether an hour
is exactly "quick").
Marion Cunningham, The Fannie Farmer Baking Book (buy
it from Powell's) (buy
it from Amazon.com): I think this is the first cookbook I
ever owned, and I still use it all the time.