I don't own an iPhone, but I do own an iPod Touch. I enjoy several free apps, including Seesmic, Facebook, Scramble and the TD Bank app. I'm addicted to that damn Scramble game, but I digress...
The Roman Catholic Church has approved an iPhone app called Confession. It's only $1.99 and it bills itself as "the perfect aid for every penitent."
Sinners, unite!