If you need a Core Data sync solution which works using Dropbox instead of iCloud or if you need to support older iOS versions then this project may be interesting to you. Originally created by Tim Isted and now maintained by Michael Fey of No Thirst Software it has been under development for quite a while but was just recently made available as open source. It is great to see code like this made public.
Remind me why you aren't using ARC yet? Steffen Itterheim debunks 8 reasons he has heard from people who are resisting the jump to ARC.
Pete Steinberger with a useful snippet of code to make the private recursiveDescription method on UIView much more descriptive. Obviously only for debug use so don't forget to remove it before you submit your apps.
Graham Lee with an updated version of his password hashing code which wraps the CommonCrypto C functions in a convenient Objective-C API.
This looks to be a fairly flexible implementation of an expandable, hierarchical table view in using UITableView. Worth a look if you need to solve this problem in an app.