UIPickerView skin with transparent selection bar (aka “an hour or two of hell”)
Or: "How to make an opaque image transparent while matching the color values."
If you don't care for reading my rant at how I arrived at the solution, feel free to simply download the PSD of my UIPickerView skin with transparent selection bar (Photoshop CS3 format, .zip, 94KB) and customize it to your heart's delight and use it in your iPhone apps. Oh, and if I saved you some time, one way of thanking me is to feed my App Store habit with a tip.
Or: "How to make an opaque image transparent while matching the color values."

The first course, to take place on February 1st-2nd, is Seb's Official Papervision3D Training class.
Flash guru Seb Lee-Delisle is holding two training courses in the UK in February, 2010: Flash Games Programming and Official Papervision3D training.
Google today released Google App Engine SDK 1.1.6 (announcement, download) which, among other things, brings with it datastore keys that you can sort and filter on.
I just started my development diary for the Singularity web conference on O'Reilly InsideRIA. Check out my inaugural post: Building Conference 2.0.
It looks like Adobe is building the "product in the middle" that Steve Jobs is looking for. Let's hope Apple cooperates by adding the Flash Player to Safari on the iPhone.