I really hope someone at Apple sees these concept interfaces from Ocean Observations. They've taken the best elements of the Pre's card system, combined them with Cover Flow, and created an awesome vision of multitasking on the iPhone.
The designers also have an idea for managing the mess of home screens that comes along with app hoarding. Tapping the home button would bring up a paneled Exposé page. From there, you could easily jump to a specific page, rather than swiping a hundred times to find Peggle.