Yummy Soup! Recipe management software for Mac.
Tried many, own several, but I love this recipe management software from Hungry Seacow Software most of all for it's easy, fast, complete drop & drag import of recipes from all the major food sites. A host of other features including full screen view for those of us (me!) that can't read a recipe off the screen to bake unless it is LARGE.
At only $20 USD for a family pack I highly recommend it.
System requirements; Mac OSX Tiger 10.4, Leopard 10.5, Snow Leopard 10.6 15 day free trial