Matthias Ringwald, of iPhone Bluetooth fame, has just released BTstack 0.1 for iPhone. This video demonstrates his group's technology in action, as an iPhone syncs with a WiiMote and then uses the WiiMote for input. Although the system does not yet have OBEX, it is, as Ringwald writes, "better than Apple's nothing."
I haven't had a chance to give the software a spin yet (you can download the source from Google Code) but I'm looking forward to playing. BTstack creates device connections using the L2CAP protocol. The code is currently aimed at jailbroken devices only. It supplies a Bluetooth daemon (BTdaemon) that you access from your apps. Given that the release is still only at version 0.1, expect a certain degree of instability and a lot of further development potential.
Looks like Stack for Jailbreak has some new improvements. For those of you unfamiliar with the application, Stack adds a quick-launch menu directly to your iPhone dock, letting you expand your dock space to hold all your favorite apps. With it you can add 16 items (using grid view) or 5 items (in fan view) for easy access in each stack. And stacks are not just limited to the dock. You can add stacks anywhere in the home screen as well.
As this video shows, you can now rename your stacks as well as use drag and drop editing. So you can create a 'Games' stack, an 'Internet' stack, and so forth. Removing items from a stack is just as easy as adding them. Just drag them out from the stack for an Apple-standard "puff of smoke" animation.
Stack, which is developed by iPhone expert Steven Troughton-Smith is donor-ware. Although not ready for public release, he has regularly been seeding early alpha builds to people who have donated to the project. But as you can see, it's making great progress.
Stack is a jailbreak-only product as Apple does not permit this kind of OS-based enhancement in App Store. That's a pity, because the relative difficulty and fear of jailbreaking keeps this kind of groundbreaking software away from the general public. It's an enhancement that Apple really should have built into the iPhone -- and hopefully someday will.
Here's another brilliant tip by way of Mac OSX Hints. It turns out that you can actually put a "Recent Items" Stack in your toolbar with a couple of terminal command.
Once you execute it this stack allows you to choose between displaying Recent Applications, Recent Documents, Recent Servers, Favorite Volumes, and Favorite Items. If you click on the Stack it opens in grid view to show whichever of these you selected. As per usual with a Stack, the Dock icon is dynamic.
Incidentally, these are the same "Recent Items..." that appear in the drop-down Apple menu, which can be adjusted in the Appearances Preference Pane.
Use Spotlight as a reference tool. Type any word in the Spotlight box and one of the top entries will be a definition. Click on it, and it will bring up the dictionary application to check the word in either the dictionary, thesaurus, Apple database, or Wikipedia.
Here's another 
![TUAW [Cafepress]](http://www.blogsmithmedia.com/www.tuaw.com/media/tuaw-cafepress-promo.png)
