This is an interesting list, one that explores the history of the iOS App Store, presenting 100 apps that moved the needle at various times. Looks like a lot of work went in to pulling this list together.
As with any list, there are quibbles (Plants vs. Zombies seems an obvious oversight to me), but I did enjoy the read.
Ocarina! I remember what a big deal that was when it came out. Great to see that on the list.