Has anyone given appcelerator a look? It seems you can develop native iphone apps using js/html/css using their mobile sdk. This would be great for simple apps I would think.<p><a href="http://www.appcelerator.com/" rel="nofollow">http://www.appcelerator.com/</a>
For those who just want to make their site friendly to iPhone users, consider generating your HTML with <a href="http://www.aptana.com/iphone" rel="nofollow">http://www.aptana.com/iphone</a> instead of a full featured iPhone SDK in Objective C approach.