This thing gets better every day. To those of you who have one already, this is a list of the coolest and best app we've found so far.
Custom Ringtones
There are a lot of hacks out there that require command line, clunky applications, and usually ugly results. To begin, install
iToner on your Mac.
1. Find any song in your iTunes library that you want to turn into a ringtone. If you have Quicktime Plus, reveal the song in the finder and open with Quicktime.
2. Mark your beginning and end points. No more than 30 seconds Copy--> Open New Player--> Paste and save the new track as a self contained movie.
3. Open the new track with iTunes and convert to an AAC file.
4. Now open
iToner and just drag your newly converted file onto the iToner window.

Good Times!
Next is App Tapp. It's an installer application that opens up a whole new world of possibilities. It unlocks your phone and lets you do pretty much everything else.
You can download
Installer App Beta: HERE.
There are a TON of applications available once you have this installed, and right from the phone, so no need to locate and transfer what you like. My current list of applications is:
Games:
iBlackjack
Five Dice- A Yatzee game
Mobile Tetris
Multimedia:
SendSong- email your iTunes songs to anyone
Voicenotes- Voice recorder
Network:
Navizon GPS- Doesn't really work software GPS
Stumbler- Detects all WiFi signals
VNsea- VNC client
Productivity:
Mobile Finder
Mobile Money
Sketches
Community Sources: A MUST HAVE, these are your sources for all of the applications.
More MUST HAVE applications
System:
BSD Subsystem
Dock
Installer
Summerboard
Utilities:
Customize
rSBT
My iPhone went from this:


To this:

Yes, this is a snapshot of my iPhone desktop, taken with my phone.
I welcome your questions.
Ben