For the benefit of the gadget geeks among C&ENtral Science's readership, I've created a video walkthrough of Molecules 1.0, a new application for the iPhone and the iPod Touch. (Apple officially unlocked access to 3rd-party applications last week). Molecules is a visualization tool for 3-D structures. I used to work with programs like this during college, when I was an intern in an x-ray crystallography group.
This version of the software isn't super-powerful, and doesn't have all the features of a standard visualization program. I agree with the commenter here who thinks it would be neat to confer inertia on the molecules when rotating, so that they would keep spinning after you flick them (the iPod Touch does something like this when you scroll). But that aside, it's still amazing to me that programs like Molecules, which I worked with on advanced computers, are now available for handheld devices.
The software is free and the developer's website says that the source code will become available soon, for those who are interested in tinkering with the program themselves.
For brief reviews, see Wired Science and MacResearch.
**My video walkthrough may not be 100% comprehensive, so please let me know if I've left anything out.**