Mike Rundle has a pretty great post outlining the common types of iPhone application interfaces, major apps that use each type, and the advantages/disadvantages of each.
I'm M. Jackson Wilkinson, a technologist, designer, speaker, educator, and writer in San Francisco. I'm the CEO and Founder of WeSprout, which is coming soon. I'm from Philadelphia, went to Bowdoin College in Maine, root for the Phillies, and love to sing.