While I am not an iPhone user (I am still happy with my ancient flip phone), I am sure many of our readers here are. So for you iPhone users, I thought I would pass along an article on Wired you might want to take a look at: 10 Most Awesome iPhone Apps of 2008.
The article outlines different applications, most are free with the rest $3 and under. Most of the outlined items are applications, but a few games made the list. Another thing to note as well are the user comments which point to even more applications you may want to give a look.
Again, I’m not an iPhone user so I cannot personally comment on any of these applications, but considering most are free, what do you have to lose?