Hellboy whoa, that's quite the list:

I have a 2g iTouch, not the iPhone

I use the Kindle app that allows me to read books via the iTouch or via my Kindle2, it automatically syncs so that I never lose my place/bookmark.

100 pushups a phys ed program that takes you from not being able to do many push ups to completeing a total of 100(in sets) in over 6 weeks. ( it's a very difficult program! )

Piano Sharp which is a virtual piano that allows you to compose music, play your own MIDI files and record new songs in a simple way at the iTouch.
http://www.youtube.com/watch?v=N0snykNRiFk

Scrabble

[This message has been edited by Stephenm52 (edited 11-04-2009).]