If you’re an interface designer, iPhone or otherwise, it’s worth a read. Silfver has done an excellent job documenting useful design tips and explaining the logic behind them. Below is an excerpt where he argues you should avoid changing tabs automatically, just one of the many helpful items of information found within this informative article
You are breaking the users sense of control by doing something that to them is unexpected. When a user clicks on a table view item they are in 9 out of 10 cases expecting the outcome to be: a) a right to left view transition or b) a bottom to top modal view transition.